SOLUTION: I need help multiplying rational expressions. 2e^3+3e/-5e * -15e^2+20e/10e^5+15e^3 I'm homeschooled and I don't have a text book and I don't know how to do this. Please show

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need help multiplying rational expressions. 2e^3+3e/-5e * -15e^2+20e/10e^5+15e^3 I'm homeschooled and I don't have a text book and I don't know how to do this. Please show      Log On


   



Question 173826: I need help multiplying rational expressions.
2e^3+3e/-5e * -15e^2+20e/10e^5+15e^3
I'm homeschooled and I don't have a text book and I don't know how to do this. Please show me how! thanks

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Use the same techniques you use for 'plain old arithmetic'.
1) Multiply the two numerators together. put the product in the numerator fo the resulting fraction
2) Multiply the two denominators together. Put the product in the denominator of the resulting fraction.
In this case, the two fractions have polynomials in them. So you'll need to use distribution first, then associtate like terms and simply them.

%28%282e%5E3%2B3e%29%2A+%2815e%5E2%2B20e%29%29%2F%28%285e%29%2A%2810e%5E5%2B15e%5E3%29%29
%2830e%5E5%2B40e%5E4%2B45e%5E3%2B60e%5E2%29%2F%2850e%5E6%2B75e%5E4%29

%286e%5E3%2B8e%5E2%2B9e%2B12%29%2F%2810e%5E4%2B15e%5E2%29