Expand collect like terms: x(x+7)+4(x^2-5) =x^2+7x+4x^2-20 = 5x^4+7x-20 i'm not sure if i'm was suppose to add the exponents together to make 5x^4 or 5x^2
Follow Math Help Forum on Facebook and Google+
It should have been $\displaystyle 5x^2$, but apart from that you are completely right.
Do not add the exponents! x^2 + 4x^2 = 5x^2
thanks guy, really appreciate the help
View Tag Cloud