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what are the factors of 20 ?
factors of -20.. I know -5X4 but when I add it does not =-7
yes right and when u multiply -2 times -5 you will get 20 but not -20 so `none` are solving quadratic equation ?
no. here is my problem 3y^2+7y-20= factors
i knew it! leading coefficient isn't one so u should multiply AC
so first multiply 3 times -20 then find two numbers
oh great yes I got thanks
remeber for AC method find two numbers when you multiply them you should get product of AC(a=leading coefficient , c=constant)
i came up with -17
and do you know you can't write the answer like (x+1st number) (x+2nd number)
what do you mean `-17`?
I took 3 X -20 to come up with my needed number
oh no i meant first multiply 3 times -20= which is equal to -60 now find two numbers when you multiply them you should get -60 but when you add or subtract them you should get -7
if leading coefficient is one then we still have to multiply A times C but as u know when you multiply by one you will get the same thing but here leading coefficinet is 3 so multiply a times c = 3 times -20 then find two numbers
right great thanks