Subtract:

((5)/(t^2)) - ((4)/(t+1))

a. ((5t+2)/((t^2)/(t+1)
b. ((5t+1-4t^2)/(t^2(t+1))
c. (1/(t^2(t+1))
d. ((5+5t-4t^2)/(t^2(t+1))

My answer is B. btw

[ 5 (t+1) - 4 t^2 ] / [ t^2 * (t+1) ]

[ 5 t + 5 - 4 t^2 ] / [ t^2 * (t+1) ]

I get D