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OpenStudy (anonymous):
How would solve this 5x^2 = –45x
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OpenStudy (callisto):
5x^2 = –45x 5x^2 +45x = 0 Take out common factors 5x(x+9) =0 So 5x =0 or x+9 = 0 x =0 or x=-9 Do you understand that?
OpenStudy (anonymous):
hold on how did you get four answers
OpenStudy (callisto):
nah.. i've got 2 only :S
OpenStudy (callisto):
5x =0 or x+9 = 0 <- solve it and you get the next step x =0 or x=-9
OpenStudy (anonymous):
ohhhhhhh ok, i get it, thanks
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