what is the value of x in this equation 4x to the second power minus 196=0

Question

_{what is the value of x 4x}² _-196=0

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Answer 1

4x^2-196=0

divide all terms by 4

x^2-49=0

factor

(x-7)(x+7)=0

x-7=0

x=7

x+7=0

x=-7

there are two answers: 7 and -7