Question

What value of g makes the equation true?

(x+7)(x-4)=x²+gx-28

Answer 1

g = 3

Explanation:

(x+7)(x-4) = x²+ gx -28

Multiply the two parenthesis

(x+7)(x-4)= x² -4x +7x -28

Combine like terms

(x+7)(x-4)= x²+3x-28

Compare the equations

x²+ gx -28 = x² +3x -28

g = 3