( / <---- means divided)
13.(2x^2+7x-30) / (x+6)
14.(6x^+2x-5) / (3x+5)
15. (8x^3+12x^2+6x+5) / (2x+1)
2007-12-01 03:41:31 · 2 answers · asked by Diamond E 1 in Science & Mathematics ➔ Mathematics
__2x_-5___________
13. x + 6 / 2x^2 + 7x - 30
- (2x^2 + 12x)
__________
-5x -30
- (-5x -30)
_______
0
14. _2x_-(8/3)_________
3x + 5 / 6x^2 + 2x - 5
- (6x^2 +10x)
_________
-8x -5
- (-8x - (40/3))
__________
25 / 3
15. _4x^2_+4x_+1_______________
2x + 1 /8x^3 + 12x^2 + 6x + 5
-(8x^3 + 4x^2)
___________
8x^2 + 6x
- (8x^2 + 4x)
________
2x + 5
- (2x + 1)
_____
4
2007-12-01 03:54:10 · answer #1 · answered by Anonymous · 0⤊ 0⤋
13)
x+6)2x^2+7x-30(2x
.......2x^2+12x
______________
..............-5x-30(-5
..............-5x-30
_______________
...................0
so 2x^2+7x-30 = (x+6)(2x-5)
14)
3x+5)6x^2+2x-5(2x
.........6x^2+10x
______________
................-8x-5(-8/3
................-8x-40/3
________________
......................25/3
6x^2+2x- 5 = [(3x-5)(2x -8/3)] + 25/3
15)
2x+1)8x^3+12x^2+6x+5(4x^2
.........8x^3+4x^2
___________________
.................8x^2+6x(4x
.................8x^2+4x
___________________
.......................2x+5(1
.......................2x+1
___________________
...........................4
8x^3 + 12x^2 + 6x + 5 = [(2x + 1)(4x^2 + 4x + 1)] + 4
2007-12-01 04:01:42 · answer #2 · answered by mohanrao d 7 · 0⤊ 0⤋