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Mathematics
Jazlynn
30 November, 15:12
How do you factor 2x^2+5x-12
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Kaitlyn Morales
30 November, 15:43
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So you find out what two numbers add up to 5 and multiply to make - 12
so since - 12 is negative we know that the two numbers have to be diffarent signs ( - times+=-)
also we see that the X^2 term is 2x^2 so we can use the 2
so the factored out form is
(2x+3) (x-4)
because the 2x times - 4=-8x
the 3 times the x=3x
add them together and get 3x + (-8x) or 5x which is our middle term
and - 4 times 3 = - 12 which is our last term
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Cierra Middleton
30 November, 18:39
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easier
multiply - 12 by two to get - 24
what goes into - 24 and adds to make 5? - 3 and 8
so the equation is 2X^2 + 8X - 3X - 12
this can cancel down to 2X (X+4) - 3 (X+4)
gather the terms to get (2X-3) (X+4)
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