3x squared + 5x -2 = ( ) ( )
2007-03-10 16:21:15 · 6 answers · asked by jeremy_rrush_ 2 in Science & Mathematics ➔ Mathematics
(3x -1)(x+2)
2007-03-10 16:24:42 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
3x ^2 + 5x -2 , Now to factorize , 1st multiply the first and last term u will get -6x^2 and the middle term is +5x .
So , now we are looking for two term whose product is -6x^2 and sum is +5x . The terms are +6x and - x .Now substitute the value in place of 5x. We get,
3x^2 +6x -x -2 , Now take common between 1st and 2nd term and 3rd - 4th terms,
3x(x+2) -1 (x+2) or taking (x+2) common We get,
( x+2) (3x-1)
2007-03-11 00:32:15 · answer #2 · answered by ritesh s 2 · 1⤊ 0⤋
Okay, this sounds like fun... Here we go:
3x^2 + 5x - 2
= 3x^2 + 6x - x - 2
= (3x^2 + 6x) + (-x - 2)
= 3x(x + 2) - 1(x + 2)
= (3x - 1) (x + 2)
Okay, yeah, that was fun.
But I recommend you learn to do this on your own, since YA won't be there when you take your test. :)
Barjesse37
2007-03-11 00:37:27 · answer #3 · answered by barjesse37 3 · 1⤊ 0⤋
look for two numbers that multiply to -6 and add up to 5
-1 and 6
(3x^2 - 1x) + (6x -2)
x(3x - 1) + 2(3x - 1)
(x+2)(3x-1)
2007-03-11 00:24:15 · answer #4 · answered by 7 · 1⤊ 0⤋
( 3x - 1 ) ( x + 2 )
2007-03-11 00:28:47 · answer #5 · answered by Hk 4 · 1⤊ 0⤋
(3x-1)(x+2)
2007-03-11 00:24:51 · answer #6 · answered by bruinfan 7 · 1⤊ 0⤋