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Factor and solve to find roots x squared -x - 90 =0

Factor and solve to find roots x squared -x - 90 =0
asked 216k views
2 votes
Factor and solve to find roots
x squared -x - 90 =0

asked
User Maxim Kamalov
by
7.6k points

1 Answer

4 votes


x^2-x-90=0\\x^2+9x-10x-90=0\\x(x+9)-10(x+9)=0\\(x-10)(x+9)=0\\x=10 \vee x=-9

answered
User Jim Castro
by
8.5k points
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