Solve. x² + 4x + 4 = 18 x=−4±32‾√ x=2±32‾√ x=−2±32‾√ x=4±92‾√

Question

asked May 13, 2021 156k views

2 Answers

Sardok · Answer 1 · 2021-05-14T21:23:48+0000

Answer:

x=−2+3√2

Explanation:

x2+4x+4−18=18−18

x2+4x−14=0

For this equation: a=1, b=4, c=-14

1x2+4x+−14=0

x=

−b±√b2−4ac

2a

x=

−(4)±√(4)2−4(1)(−14)

2(1)

x=

−4±√72

2

x=−2+3√2 or x=−2−3√2