SOLUTION: x^2-16/2x^2+4x multiply x^2+9x+14/x^2+2x-8 divide x^2+3x-28/16x-8x^2

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: x^2-16/2x^2+4x multiply x^2+9x+14/x^2+2x-8 divide x^2+3x-28/16x-8x^2       Log On


   



Question 662072: x^2-16/2x^2+4x multiply x^2+9x+14/x^2+2x-8 divide x^2+3x-28/16x-8x^2
Found 2 solutions by ReadingBoosters, MathTherapy:
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-16/2x^2+4x multiply x^2+9x+14/x^2+2x-8 divide x^2+3x-28/16x-8x^2
first
x^2-16 is the same as (x+4)(x-4)
next
2x^2+4x is the same as 2x(x+4)
then
x^2+9x+14 is the same as (x+7)(x+2)
then
x^2+2x-8 is the same as (x+4)(x-2)
then
x^2+3x-28 is the same as (x+7)(x-4)
last
16x-8x^2 is the same as -8x(x - 2)
Now begin...
[(x+4)(x-4)/2x(x+4)]times[(x+7)(x+2)/(x+4)(x-2)] divide [(x+7)(x-4)/-8x(x - 2)]
(x-4)/2x times [(x+7)(x+2)/(x+4)(x-2)] divide [(x+7)(x-4)/-8x(x - 2)]
(x-4)(x+7)(x+2)/2x(x+4)(x-2) divide [(x+7)(x-4)/-8x(x - 2)]
which is the same as
(x-4)(x+7)(x+2)/2x(x+4)(x-2) times -8x((x - 2)/(x+7)(x-4)
What remains after cancelling
-4(x+2)/ x+4
This expression has similied to [-4(x+2)]/(x+4)

Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-16/2x^2+4x multiply x^2+9x+14/x^2+2x-8 divide x^2+3x-28/16x-8x^2



------ Changing division to multiplication, and inverting last fraction

----- Factoring all numerators and denominators

----- Canceling all that can be canceled in the numerator and denominator

4%282+-+x%29%2F%28x+-+2%29 ------ 4+%2A+-+1%28x+-+2%29cross%28%282+-+x%29%29%2F%28x+-+2%29 ---- 4+%2A+-+1cross%28%28x+-+2%29%29%2Fcross%28%28x+-+2%29%29 ------ highlight_green%28-+4%29

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