1) 10x^2=0
2) (x+3)(x+7)=0
1)
10x^2 = 0
x^2 = 0
x = 0
2)
(x + 3) ( x + 7) = 0
x + 3 = 0
x = - 3
x+ 7 = 0
x = - 7
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