Respuesta :

apologiabiology
remember
difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)

(x)^2-(7)^2=(x-7)(x+7)

set to zero
x-7=0
x=7

x+7=0
x=-7

x=-7 or 7

Answer:

Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0

Step-by-step explanation:

Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0

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