|exponent for e = u = 5x, du = 5 dx, "fix" the 5|
|u = x², du = 2x dx, "fix" the 2|
|This is a fraction, but the numerator is not the derivative of the|
denominator. It is not a log. It is also not a single power of e.
|Rewrite the integrand as two fractions and simplify using exponent rules.|
|Rewrite the integrand first.|