Friday

August 29, 2014

August 29, 2014

Posted by **Yvonne** on Wednesday, April 24, 2013 at 11:49pm.

- Algebra -
**Reiny**, Thursday, April 25, 2013 at 8:23amfactor each part

here is the hardest part

x^3 + 2x^2 - 4x - 8 , using grouping

= x^2(x+2) - 4(x+2)

= (x^2 - 4)(x+2)

= (x+2)(x-2)(x+2) or (x-2)(x+2)^2

so...

(x^3+2x^2-4x-8)/(x^4-16)x(3x^2+8x+5)/3x^2+11x+10)

= (x-2)(x+2)^2 /((x-2)(x+2)(x^2 + 4)) * (x+1)(3x+5)/((3x+5)(x+2))

=**(x+1)/(x^2 + 4)**, x ≠ ±2, -5/3

check by picking any value of x other than the restricted values

e.g. let x = 1

in original:

= (-9)/(-15)*(16/24) = 2/5

value of (x+1)/(x^2+4) = 2/5

**Related Questions**

math - I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=...

Algebra - Add the following (-8^2-2x+4)+(x^2-9x+7) A)9x^2-7x+11 B)-8x^2+11x+11 C...

Algebra 1b! - 1. Find the excluded value of x for the polynomomial expression ...

algebra - Can anyone tell me if I got this problem right 12x-6=11x 12x-6+6=11x+6...

MATH - Algebra - 11x^2 + 22x/11 Am I on the right track? 11(x^2 + 11x)/11 = x^2...

Algebra - 3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct

Algebra 1 - 3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.

Algebra - 3x-27/55÷x-9/15x my answer is =3(11x^2-4)/11x is this correct.

Algebra - I cannot understand how you worked out this problem Bob. Could you ...

Algebra - I need to make sure this is correct. 5/2x+1/4x=11/4+x 4(5/2x+1/4x=11/4...