Question

What is the value of polynomial 5x-4x2+3 at x=1/2.

Answer 1

P(x) = 5x-4x^2+3

P(1/2)= 5(1/2)-4(1/2)^2+3

=5/2-4×1/4+3

=5/2-1+3

=5-2+6/2

=9/2

Answer 2

Answer:

Given:

⇒ Value of polynomial: $\sf 5x-4x^2 + 3 \: at \: x= \dfrac{1}{2}.$

Calculations:

⇒ The given polynomial: $\sf 5x-4x^2+3$

⇒ We have to find the value using $\sf (x = \dfrac{1}{2})$

Step-by-Step-Explanation:

⇒ $\sf (\dfrac{1}{2})= 5 (\dfrac{1}{2})-4(\dfrac{1}{2})^2+3$

⇒ $\sf \dfrac{5}{2}-4 \times \dfrac{1}{4} +3$

⇒ $\sf (\dfrac{5}{2})-1+3$

⇒ $\sf 5-2+(\dfrac{6}{2})$

⇒ ${\sf{\underline{\boxed{\green{\sf{\dfrac{9}{2} }}}}}}$