Asked by Candice

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

6 years ago

Answered by Damon

no way

6 years ago

Answered by Candice

thanks for your help Damon!

6 years ago

Answered by Damon

sqrt (b^2-4ac) = sqrt (337)
that is not a perfect square so factoring will not work.

6 years ago

Answered by oobleck

So close!
x^2 - 6x - 72 = (x-12)(x+6)
x^2 - x - 72 = (x-9)(x+8)

6 years ago

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