Question

What is the value of 3x^2-5x+2 when x=-4?
a. -66
b. -26
c. 30
d. 70

Answer 1

d. 70

Explanation:

Substituting the value of x=-4, in the given quadratic expression,

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

= 3*16 - (-20) + 2

= 48 + 20 + 2

= 70