SOLUTION: 1) For what values is rational expression undefined 3w+4/(w+4)(w-1) 2) Evaluate radical expression f-1/f(f+3) if f=3 and f=0. Write undefined if appropiate.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 1) For what values is rational expression undefined 3w+4/(w+4)(w-1) 2) Evaluate radical expression f-1/f(f+3) if f=3 and f=0. Write undefined if appropiate.       Log On


   

Question 117184: 1) For what values is rational expression undefined
3w+4/(w+4)(w-1)

2) Evaluate radical expression f-1/f(f+3) if f=3 and f=0. Write undefined if appropiate.

3)Evaluate 1/x+4^-2
4)Simplify 2(x+y)/8(x+y)^2

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
1) For what values is rational expression undefined
%283w%2B4%29%2F%28%28w%2B4%29%28w-1%29%29+
If w%2B4=0 or w+=+-4
And w-1=0 or w=1 rational expression is undefined.

2) Evaluate radical expression %28f-1%29%2Ff%28f%2B3%29 if f=3 and f=0.
Write undefined if appropiate.
%28f-1%29%2Ff%28f%2B3%29…………… if f=3
%283-1%29%2F3%283%2B3%29……………
2%2F18……………
1%2F9……………

%28f-1%29%2Ff%28f%2B3%29…………… if f=0
%280-1%29%2F0%280%2B3%29……………
%28-1%29%2F0%283%29……………
%28-1%29%2F0…………… expression is undefined

3)Evaluate 1%2Fx%2B4%5E-2+
1%2Fx%2B1%2F4%5E2+
1%2Fx%2B1%2F16+
%2816%2Bx%29%2F16x+
Or, if you have this:

1%2F%28x%2B4%5E-2%29+
1%2F%28x%2B+1%2F4%5E2%29+

1%2F%28x%2B+1%2F16%29+
%281%2F1%29%2F%28%2816x%2B+1%29%2F16%29+
16%2F%2816x%2B+1%29

4) Simplify 2%28x%2By%29%2F8%28x%2By%29%5E2
2%28x%2By%29%2F2%2A4%28x%2By%29%28x%2By%29
cross%282%29cross%28%28x%2By%29%29%2Fcross%282%29%2A4cross%28%28x%2By%29%29%28x%2By%29
1%2F4%28x%2By%29