britelamp40b1x britelamp40b1x

23-04-2018
Mathematics

contestada

Solve the quadratic equation. (x + 6)2 = 49
A) x = -7 or 1
B) x = 13 or -1
C) x = 1 or -13
D) x = ± 7

Respuesta :

MrsStrong MrsStrong

10-01-2019

Answer:

C

Step-by-step explanation:

To solve, use inverse operations:

[tex](x+6)^2=49\\\sqrt{(x+6)^2} =\sqrt{49} \\x+6=+/-7[/tex]

Now we solve for both +/- 7.

x+6=7

x=1

x+6=-7

x=-13

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