Solve for x in the equation x^2 + 4x - 4 = 8

Question

Mathematics

Ronan Prince

10 July, 21:08

Solve for x in the equation x^2 + 4x - 4 = 8

+2

Answers (2)

Know the Answer?

Shyla Mckay · Answer 1

Subtracting 8 from both sides of the equation gives

x^2 + 4x - 12 = 0

(x + 6) (x - 2) = 0

x = - 6, 2 answer

Amelia Schneider · Answer 2

x^2+4x-4=8

Subtract 8 from both sides: x^2+4x-4-8=8-8

Simplify: x^2+4x-12=0

Solve with the quadratic formula: For a=1, b=4, c=-12: x1,2 = - 4 + - (4^2-4*1 (-12)) sqrt over 2*1

x = 2 and x=-6