Example: Subtract and simplify (a-2)/(a+2) - (a-3)/(a²+4a+4).

Problem

Subtract the following rational expressions.
You may keep the denominator in its factored form.
start fraction, 3, x, start superscript, 2, end superscript, divided by, 40, x, start superscript, 2, end superscript, plus, 300, x, plus, 140, end fraction, minus, start fraction, 9, x, divided by, 10, x, plus, 70, end fraction, equals
Get 3 answers correct in a row