Question

Rewrite the equation by completing the square.
x2 + 3x – 28 = 0
(x +
)2 =

Answer 1

Explanation:

x2 + 3x – 28 = 0

x^2+7x-4x-28=0

x (x+7)-4(x+7)=0

x-4)(x+7)=0

x=4

x=-7