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Mathematics 18 Online
OpenStudy (anonymous):

Factor: x^2+6x-7=0

OpenStudy (anonymous):

what two numbers when you multiply them together you get -7 and when you add them together you get 6?

OpenStudy (anonymous):

\[ x^2 + 7x - x - 7 = 0 \] \[ x(x + 7) - (x + 7) = 0 \] \[ (x + 7)(x - 1) = 0 \]

OpenStudy (anonymous):

wow can you stop sniping?

OpenStudy (anonymous):

7, -1

OpenStudy (anonymous):

yes you are correct you can see why these number are important right? (x+7)(x-1)=0 is what you get

OpenStudy (anonymous):

That's a little trick on how to factor it out

OpenStudy (anonymous):

ohh okay thanks

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