**How to use hit and trial method**

**Hit and trial method **is used to find out the required value by putting any value of given variable in the given equation.

For example, consider an equation

Here, we have to make p(x) = 0 by putting some value of x.

So, randomly we start with the value of x = 1.

Now, p(1) = 1^{3} + 13(1)^{2} + 32 × 1 + 20

⇒ p(1) = 1 + 13 + 32 + 20 = 66 ≠ 0

Here, p(1) ≠ 0. SO, we try with another value of x = -1 as:

Now, p(-1) = (-1)^{3} + 13(-1)^{2} + 32 × (-1) + 20

⇒ p(-1) = -1 + 13 - 32 + 20 = 33 - 33 = 0

Therefore, p(-1) = 0

Hence, -1 is that value of x which will make p(x) = 0.

In the say we can put different values of any variable in any equation to get the desired result.

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