(3x -5) (-4x + 2)
2007-03-30 05:17:14 · 8 answers · asked by chrismath07 1 in Science & Mathematics ➔ Mathematics
Use FOIL (First, Outer, Inner, Last: (a + b)(c + d) = ac + ad + bc + bd
- 12x^2 + 6x +20x -10
combine like terms. in this case it's x so:
-12x^2 +26x - 10
2007-03-30 05:22:49 · answer #1 · answered by Justin M 4 · 1⤊ 0⤋
the product is the answer to a multiplication sum. To multiply things in brackets you use FOIL (first, outsides, insides, lasts)
so 3x * -4x = -12x ^2
3x * 2 = 6x
-5x* -4x = 20x
-5 * 2 = -20
then you work the numbers into something more sensible to get
-12x^2 + 26x - 20
factorise that so that the numbers are less bulky
-2 ( 6x^2 - 13x + 10)
2007-03-30 12:23:46 · answer #2 · answered by Jennifer 2 · 0⤊ 0⤋
(3x - 5 ) (-4x + 2) = ?
- 12 x^2 + 6x + 20x - 10 = - 12x^2 + 26x - 10
2007-03-30 12:23:31 · answer #3 · answered by Swamy 7 · 0⤊ 0⤋
(3x - 5) (-4x + 2)
3x(-4x + 2) -5 (-4x + 2)
-12x^2 + 6x +20x -10
-12x^2 +26x - 10
2007-03-30 12:24:22 · answer #4 · answered by pritamgola 2 · 0⤊ 0⤋
-12x^2 + 6x + 20x -10 = -12x^2 +26x -10
2007-03-30 12:21:23 · answer #5 · answered by MadScientist 2 · 0⤊ 0⤋
-12x^2+26x-10
2007-03-30 13:16:44 · answer #6 · answered by kristi 1 · 0⤊ 0⤋
-12x^2 + 26x -10
That is the answer. I leave it to you to fill in the middle step, if it is required.
2007-03-30 12:25:33 · answer #7 · answered by ellipse4 4 · 0⤊ 0⤋
-8x^2+6x-10
2007-03-30 12:22:47 · answer #8 · answered by Missy 2 · 0⤊ 1⤋