Question

Solve for x: 2xsquared+4x-16=0

Answer 1

2x² + 4x - 16 = 0
2(x²) + 2(2x) - 2(8) = 0
2(x² + 2x - 8) = 0
2 2
x² + 2x - 8 = 0
x = -(2) ± √((2)² - 4(1)(-8))
2(1)
x = -2 ± √(4 + 32)
2
x = -2 ± √(36)
2
x = -2 ± 6
2
x = -1 ± 3
x = -1 + 3 U x = -1 - 3
x = 2 x = -4