The Quotient Rule Practice Test

$(\cos x-x\sin x)(x+1)-(x\cos x)$

$\dfrac{\cos x-x\sin x}{x+1}-\dfrac{1}{(x+1)^2}$

$\dfrac{(\cos x-x\sin x)(x+1)+(x\cos x)(1)}{(x+1)^2}$

$\dfrac{(\cos x-x\sin x)(x+1)-(x\cos x)(1)}{x+1}$

$\dfrac{(\cos x-x\sin x)(x+1)-(x\cos x)(1)}{(x+1)^2}$