Answer:
(x-3)²-49=0 = a²-b² that we factor (a-b)(a+b)
(x-3-7)(x-3+7)=0
(x-10)(x+4)=0
x-10=0⇔x=10
x+4=0⇔x=-4
exact solution x =10 or -4
Explanation:
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