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Mathematics 20 Online
OpenStudy (anonymous):

R^2+12r+35

OpenStudy (anonymous):

\[R^2+12r+35\] \[(R + 5) (R + 7)\]

OpenStudy (anonymous):

have to find two numbers that multiply to +35 but add to +12

OpenStudy (anonymous):

7 * 5 = 35 7 + 5 = 12

OpenStudy (anonymous):

take coefficient of r^2 multiply by constant that is 1*35=35 now try to sort out the factor of 35: that is 1*35,-1*-35 ,7*5,-7*-5, now see which of the factor give u the total of coefficient r, in that case 7*5 give u 12 so answer is (r+7)(r+5)

OpenStudy (anonymous):

yes, i agree.

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