SOLUTION: I still need some assistance with these problems, the ones I think I have right I wrote down so someone could check it over for me. I would greatly appreciate any help on those pro

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I still need some assistance with these problems, the ones I think I have right I wrote down so someone could check it over for me. I would greatly appreciate any help on those pro      Log On


   



Question 531099: I still need some assistance with these problems, the ones I think I have right I wrote down so someone could check it over for me. I would greatly appreciate any help on those problems and the ones I have not been able to figure out. Thanks so much in advance!
1. Divide and simplify 3x-27/14 divide by x-9/6x
2. Find all numbers for which the rational expression is undefined. q^3-2q/q^2-16
3. Multiply (5x+4)(7x^2+9x+4)
*is the answer (5x)(7x^2)+(5x)(9x)+(5x)(4)+(4)(7x^2)+(4)(9x)+(4)(4)
35x^3+45x^2+20x+28x^2+36x+16
answer**35x^3+73x^2+56x+16
4. Factor completely 3x^5-27x^4+9x^3
*is this answer 3x^3(x-3)(x-3)?
5. Subtract. Simplify, if possible. (4-v/v-7)-(6v-5/7-v)
*is the answer 9-7v/2v-14?
6. Perform the indicated operations and simplify (y-6/y-8) – (y+1/y+8 )+(y-40/y^2-64)
*is the answer y-47/(y+8)(y-8)?
7. Simplify by taking roots of the numerator and the denominator 3^sqrt
8x^14/y^3
8. Multiply and simplify. (4b^2/4b^2-24b+36)(4b-12/2b)
9. Solve. 2/v=6/v-1/3
10. Add. Simplify if possible. (3w/w^2-25) + (w/w-5)
*is the answer 4w/w^3-30?

Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
Please ask 1 question at a time.
.
1. Divide and simplify 3x-27/14 divide by x-9/6x
.
x=9/14
.
2. Find all numbers for which the rational expression is undefined. q^3-2q/q^2-16
.
If the expression is +%28q%5E3-2q%29%2F%28q%5E2-16%29+ then will be undefined for q = -4 or +4 because that will result in division by 0.
.
3. Multiply (5x+4)(7x^2+9x+4)
.
35*x^3+73*x^2+56*x+16
.
4. Factor completely 3x^5-27x^4+9x^3
.
3*x^3*(x^2-9*x+3)
.
5. Subtract. Simplify, if possible. (4-v/v-7)-(6v-5/7-v)
.
(-5*v-23/7)