Math(Please help)
posted by Hannah on .
1) An expression that occurs in calculus in given. Reduce the expression to lowest terms.
(2x + 5) 4x  2x^2(2) / (2x+5)^2
I have no idea what to do for this.
2) Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.
(3 x^4/7) ^4 / x^1/2
I know that (3)^4 would be 81 but I do not know what else to do.

on the first, I have no idea what the numerator is.
On the second
(3)^4 (x^4/7)^4 (x^1/2)=
81* x^(16/7 + 1/2)
YOu can combine that x exponent.