Asked by Candice

solve by factoring x^2 -7x-72=0

Answers

Answered by Damon
no way
Answered by Candice
thanks for your help Damon!
Answered by Damon
sqrt (b^2-4ac) = sqrt (337)
that is not a perfect square so factoring will not work.
Answered by oobleck
So close!
x^2 - 6x - 72 = (x-12)(x+6)
x^2 - x - 72 = (x-9)(x+8)
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