Gwen was asked to solve 3x^2−20=7

Question

 by factoring using the difference of squares pattern. What is/are the correct solution(s)?(1 point)
Responses

x=3
x equals 3

x=−3
, x=3
x equals negative 3 ,  x equals 3

x=9
, x=−9
x equals 9 ,  x equals negative 9

x=−3
x equals negative 3
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Answer 1

The correct solution is x = 3