Question

the value of the polynomial
5x-4x^2+3 when x= -1​

Answer 1

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Step-by-step explanation:

5(-1) - 4(-1)^2 + 3

-5 - 4 + 3 = (-6)

Answer 2

For finding the value of the given polynomial we just need to follow The below steps:

1. Find the value of x
2. Put it up in the polynomial
3. Simplify

Solution :

➝ As we have already been given the value of x which is -1 we will directly go to the second step.

➝ p(x) = 5x - 4x² + 3

➝ p(-1) = 5(-1) - 4(-1)² + 3

Simplification :

➝ p(-1) = 5(-1) - 4(-1)² + 3

➝ p(-1) = -5 - 4 + 3

➝ p(-1) = -9 + 3 (We got (-9) here as - ,- = +)

➝p(-1) = -6

So the value of the given polynomial is -6