SOLUTION: (3/10x^3-1/4x-1/8)-(1/10x^3+1/4x-1/8) Please help me to slove this I don't even know where to begin! Thank you

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: (3/10x^3-1/4x-1/8)-(1/10x^3+1/4x-1/8) Please help me to slove this I don't even know where to begin! Thank you      Log On


   

Question 132302: (3/10x^3-1/4x-1/8)-(1/10x^3+1/4x-1/8)
Please help me to slove this I don't even know where to begin! Thank you
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%28%283%2F10%29x%5E3-%281%2F4%29x-1%2F8%29-%28%281%2F10%29x%5E3%2B%281%2F4%29x-1%2F8%29 start with the given expression


%283%2F10%29x%5E3-%281%2F4%29x-1%2F8-%281%2F10%29x%5E3-%281%2F4%29x%2B1%2F8 distribute the negative


group like terms


%282%2F10%29x%5E3-%282%2F4%29x%2B0%2F8 combine like terms


%281%2F5%29x%5E3-%281%2F2%29x reduce and simplify


So %28%283%2F10%29x%5E3-%281%2F4%29x-1%2F8%29-%28%281%2F10%29x%5E3%2B%281%2F4%29x-1%2F8%29 simplifies to %281%2F5%29x%5E3-%281%2F2%29x


In other words,