Question

State whether the following statement is True or False

The value of the polynomial $4x-7x^2+5x^3+4$ at $x=-1is-10$

• A. True
• B. False

Answer 1

The correct option is B False

Finding the value of the given polynomial $4x-7x^2+5x^3+4$ at $x=-1$:

Given polynomial: $4x-7x^2+5x^3+4$

Putting $x=-1$in the given polynomial, we get:

$$\begin{gathered} \Rightarrow 4(-1)-7{(-1)}^2+5{(-1)}^3+4 \\ \Rightarrow -4-7\left(1\right)+5(-1)+4 \\ \Rightarrow -4-7-5+4 \\ \Rightarrow 0-7-5=-12 \end{gathered}$$

So, at $x=-1$ the value of the equation is -12.

Hence, the given statement is false.