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OpenStudy (anonymous):
Solve the following equations by either factoring or by completing the square: x^2+7x-18=0
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OpenStudy (precal):
(x+9)(x-2)=0 x=-9 x=2
OpenStudy (anonymous):
howd you get that?
OpenStudy (precal):
look at your last term 18 what two numbers can you multiply to get 18 but when you subtract give you 7 sign in front of 18 tells you to subtract 9-2=+7
OpenStudy (anonymous):
thank you
OpenStudy (precal):
anytime :)
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