Use a u-substitution to integrate. Show all steps!
[ ∫ {7x⁵+14x⁴+14x³+5x+5}/{x²+2x+2}dx ]
a) ( 7ln(x²+2x+2)+C )
b) ( 7ln(x²+2x+2)+14x+5+C )
c) ( 7ln(x²+2x+2)+14x²+5x+C )
d) ( 7ln(x²+2x+2)+14x³+5x²+C )