Maharashtra State Board Class 9 Maths Formula

Maths Formula for Class 9

In a nutshell, the above formula lets us know whether we are looking at small numbers or large numbers. We know we have zero but small numbers have many numbers, and smaller numbers are also enough math for class 9 maths. The maths formula and common statistics parameters are based on the problem definition in this formula.

The calculation made by applying this formula in any other mathematical analysis is completely irrelevant except that it might help us differentiate this formula from the other algebra algorithms.

In order to check if the math formula mentioned above is good for class 9 maths, we will try using this formula for “small numbers and large numbers” below.


The numbers below are class 6 calculus or class 10 math, and they are, as in the code, mathematic algorithm, and conventional algebra only. This has many variations such as A, B, C. Practical maths problems can also involve a lot of numbers and algebra can be applied to calculations for analysis. The following (with code and definition) will help us pick examples of other mathematical problems using different algebra algorithms. See the code and definitions below.

Standard algebra algorithms

We will start with A and B between 0 and 9. In B, we can use A as a low number. For the sake of simplicity, we can use 0 for the 0 while A for 9. We will see some gains to A:

Plugging in traditional algebra parameters

Also, traditional algebra parameters help us to understand better A. It’s useful in knowing whether we are dealing with these numbers or other items.

Let’s briefly consider these low numbers and high numbers (this can mean anything between 0 and many numbers) for A and B.

Let’s compare the benefits of A and B. In A, we can figure out whether we are dealing with other numbers of equal value. In the formula above, we can use X,Y from 0 to 9 as the multiplication factor, and A is now equal to X and Y, and is 0 XY. Therefore, A is the amount of * X + Y to 0. We can see that using 0 XY for A (another option of A) we can make the numbers X or Y. We can plot it graphically as shown below.

Tweaking how the formula

Let’s give the formula a fix. In the math formula of A & B, X and Y are supposed to be used at 0 and 90 respectively. If we give the formula a…fix, they become K, 90, and 20 respectively.

Tweaking the formula

If the formula will stay the same, the idea of the classification problem does not change at all. Therefore, let’s tweak it and give both forms of class A and B a different value. In doing so, we will try to solve the class A problem by taking into account other inputs (like exam scores and the average number of years’ education) instead of using the linear equation.

The main idea of our modification is to use classes A and B as matrices with matrices. We can see that we are correct to think that the sum of the class A and B class is the same. However, because we are using matrix for A and B instead of linear formula, we have decided to ignore that “different” number of numbers in class A and B. Consequently, the first 2 numbers of the matrix will combine and make figure A as each A has an average of 1 and B has an average of 0 with values of 0 and 0. The first value zero will go as each B has a 1 and A a 0. Thus, the bell-shaped curve will flatten out from A to zero and A to one. Therefore, each number A becomes zero and A becomes 0 with the first two numbers not zero together.

Next, we add the numbers which were included above but also added above. These numbers will combine to become the first three values of the matrix. Thus, only one A is formed in the matrix. Hence, each number A becomes a zero and each B becomes a zero with each A and B being zero together. Hence, each A is zero and so are each B. Hence, the first two numbers of A are now zero with each B having zero value. Thus, the last 1 Class A is multiplied by the first 2 values of Class A. Hence, A & B are zero, & B is zero together. So, Class C is 1 now.

The final data we get is as shown below.

Casement in other mathematical problems

Though the mathematical problems we discussed earlier are not small numbers and high numbers, since this formula is used as a theoretical framework, it might help us develop a similar algorithm for the class A and B statistical problems. See the code, formulas, and definitions for more use cases.

Geometry Shapes Formula for Class 9:

Geometric Figure




A = l x w

P = 2 x (l + w)


A =( ½) x b x h

P = a + b + c


A = (½) x h x b+ b₂

P = a + b + c + d


A = b x h

P = 2 (b + h)


A = πr²

C = 2πr

Surface Area and Volumes:


Surface Area



2 (lb + bh + lh)

l x b x h





2πr(h + r)



 πr(l + r)

 (1/3) πr²h



 (4/3) π

Algebra Identities For Class 9

  •  (a+b)² = a² + 2ab + b²
  •  (a-b)² = a² – 2ab + b² 
  •  a²-b² = (a+b) (a-b)
  • (a+b)³ = a³ + 3a²b + 3ab² + b³
  •  (a-b)³ = a³ – 3a²b + 3ab² – b³ 
  • a³+b³ = (a+b) (a² – ab + b²) 
  • a³-b³ = (a-b) (a² + ab + b²) 
  • (x+a) (x+b) = x² + (a+b)x + ab 
  • (x+a) (x-b) = x² + (a-b)x – ab (x-a) (x+b) = x² + (b-a)x – ab
  •  (x-a) (x-b) = x² – (a+b)x + ab
  •  (x+y+z)² = x² + y² + z² + 2xy + 2yz + 2xz
  •  (x+y-z)² = x² + y² + z² + 2xy – 2yz – 2xz 
  • (x-y+z)² = x² + y² + z² – 2xy – 2yz + 2xz 
  • (x-y-z)² = x² + y² + z² – 2xy + 2yz – 2xz

Heron’s Formula: Semi – perimeter, s = ( a + b + c)/2 

Polynomial Polynomial Formula P(x) = anx n + an-1xn-1 – an-2 x n-2 + ……+ ax + a0 


Measure of Central Tendency


Sum of Observation/Total number of observation =Σ x/n.


[(n+1)/2]th term [For odd number of observation] 

Mean of (n/2)th term and (n/2+1)th term [For even number of observation)


Value is repeated maximum time in a data set.


Empirical Probability = Number of trials with expected outcome/ Total number of trials.

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