Question

Find the value of the polynomial 5x – 4x² + 3 at (x = 2) and (x = –1) *

Answer 1

Simply put x=2 and x=-1 in place of x in the polynomial .. say f(x)
=> f(-1) = 5(-1) - 4(-1)^2 +3 = -5 -4 +3 = -6
=> f(2) = 5(2) -4(2)^2 +3 = 10 -16 + 3 = -3

Answer 2

Answer:

Step-by-step explanation:

x=2. (5*2-4*4+3)=10-16+3 = -3

x=-1. (5*-1-4*1+3)=-5-4+3 = -6