For StartFraction 8 x Superscript 7 Baseline + 10 x Superscript 6 Baseline + 20 x Superscript 5 Baseline + 33 x Superscript 4 Baseline + 23 x cubed + 37 x squared + 9 x + 4 Over (x + 1) squared (x squared + 1) cubed EndFraction , which expression represents the correct form of the partial fraction decomposition?