solve for x: 2xsquared+4x-16=0
2x² + 4x - 16 = 02(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