amy6814 amy6814

07-08-2020
Mathematics

contestada

complete the square to solve
f(x)=x^2+6x-7

Respuesta :

LazyBun LazyBun

07-08-2020

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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