Recent content by elie_girl

oh ok thanks! It worked.

Well I keep submitting then into my homework and I still get them wrong. I don't know what else to do.

Oh ok, I think I get it now. Thanks very much!

1. Rationalize the numerator sqrt(5)+3/-4sqrt(7). (sqrt(5) + 3) / (-4)(sqrt(7)) = (sqrt(5) + 3)(sqrt(5) - 3) / (-4)(sqrt(7))(sqrt(5) - 3) = (5 - 9) / (-4)(sqrt(7))(sqrt(5) - 3) = -4 / (-4)(sqrt(7))(sqrt(5) - 3) = 1 / (sqrt(7))(sqrt(5) - 3) 2. Perform the operation. Write the answer...

So then would the answer be (sqrt(5)+3sqrt(7))/14 ?

So then (a+4)^1/2 should be the denominator?

How do I rationalize the numerator?

1/2ln(a+4)+ln(b)-5ln(c) is the answer ln b/c^5(a+4)^1/2 ? I just need to know if this answer is right,and should the format of the equation look like that also? Because the Math palette I submit it in needs to have it a certain way or else it will mark it as wrong.

Rationalize the numerator sqrt(5)+3/-4sqrt(7) The answer I got for this was -(sqrt(5)+3*sqrt(7)/28) and it marked it as wrong.

Oh ok. I think I understand it now a little better. Thanks. I'll try and follow those steps and see what I get. Thanks again.

I keep getting the answers to these problems wrong. 1)For what numbers is the rational expression undefined? (If there are less than two answers, enter NONE in any extra boxes.) x/x^2-2x-24 x=_____ Smaller value x=_____ Larger Value 2)Simplify the complex fraction. 3m-6/5m/4m-8/25 I...