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alisha [4.7K]
3 years ago
11

Complete the square to solvef(x)=x^2+6x-7​

Mathematics
1 answer:
antoniya [11.8K]3 years ago
7 0

Answer: x = 1 and x = -7

Explanation:
x^2 + 6x - 7 = 0
x^2 + 6x + 3^2 = 7 + 3^2
(x + 3)^2 = 16
x + 3 = +-4 (square both sides)

x + 3 = 4
x = 1

x + 3 = -4
x = -7
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