vadasessions
vadasessions
02-12-2017
Mathematics
contestada
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
Answer Link
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