Frequent Questions about our Solver

The problem

Click to see the original problem

Hi, I am just confused as to why we are subtracting 4.

Answer provided by our tutors

We need to reduce the fraction the the lowest term, so we are dividing by x^4 above and bellow the fractional bar.

x^4:x^4 = 1



or as we have it in the solution:

← Previous Problem Next Problem →