Asked by LaShawn

(a-3)(a+7)=-9

Answers

Answered by sharii
a(a+7)-3(a+7)=-9
a^2+7a-3a-21+9=0
a^2+4a-12=0
a^2+6a-2a-12=0
a(a+6)-2(a+6)=0
a+6=0
a=-6
OR
a-2=0
a=2
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