(x-3)^2-25=0 помогите

Question

(x-3)^2-25=0 помогите

Answer 1

A²-b²=(a-b)(a+b)
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(x-3)²-5²=0
(x-3-5)(x-3+5)=0
(x-8)(x+2)=0
x-8=0
x=8
x+2=0
x=-2