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02-12-2017
Mathematics

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how do you factor -3x^2+5x+12=0

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meredith48034 meredith48034

02-12-2017

-(3^2x-5x-12)=0
-(3x+4)(x-3) =0
x= 4/3 & x= -3
is the answers

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Аноним Аноним

02-12-2017

-3x^2 + 5x + 12 = 0

-3*12 = -36

Now 9 * -4 = -36 and 9 - 4 = +5 so we write:-

-3x^2 + 9x - 4x + 12 = 0

-3x (x - 3) -4 (x - 3) = 0

(x - 3) is common so we have the answer which is:-

(-3x - 4)(x - 3) = 0

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