Question

The value of the polynomial $5{\text{x-4x}}^2\text{+3}$, when $\text{x=-1}$ is

• A. $-6$
• B. $6$
• C. $2$
• D. $-2$

Answer 1

The correct option is A

$-6$

Now the given polynomial is ${\text{p(x)=5x-4x}}^2\text{+3}$

For finding the value of polynomial we put $\text{x=-1}$ in the given polynomial

${\text{p(-1)=5(-1)-4(-1)}}^2\text{+3}$$=-5-4\left(1\right)+3=-5-4+3=-9+3=-6$

Hence option(A) is the correct answer and all other options are incorrect .