Question

if it was m+7 over msquared+4m-21 what would it be? (rational expressions)

Answer 1

Factor the denominator:

\[m^2 + 4m - 21=(m + ?)(m-?)\]

Answer 2

SORRY to intrude:
To factor the denominator would ivolve the following:
With 21 at the end, you would want to find the factors of 21 that add to give 4. They would be 3 and 7, as in 7-3\[m^2+7m-3m-21\]\[(m+7)(m-3)\]*It is also a fraction with the numerator being \[m+7\] This may work out to \[1/m-3\]