Answer :
x² + 16x = -28
x² + 16x + 28 = 0
x = -(16) +/- √((16)² - 4(1)(28))
2(1)
x = -16 +/- √(256 - 112)
2
x = -16 +/- √(144)
2
x = -16 +/- 12
2
x = -8 + 6
x = -8 + 6 x = -8 - 6
x = -2 x = -14
x² + 16x + 28 = 0
x = -(16) +/- √((16)² - 4(1)(28))
2(1)
x = -16 +/- √(256 - 112)
2
x = -16 +/- √(144)
2
x = -16 +/- 12
2
x = -8 + 6
x = -8 + 6 x = -8 - 6
x = -2 x = -14