How do you simplify w−3w2−w−20+ww+4?
1 Answer
Apr 15, 2017
Explanation:
Before we can add the fractions we require them to have a
common denominator
factorise the denominator of the left fraction
⇒w−3(w−5)(w+4)+ww+4
To obtain a common denominator multiply the numerator/denominator of
ww+4 by (w−5)
⇒w−3(w−5)(w+4)+w(w−5)(w−5)(w+4) Now we have a common denominator, add the numerators leaving the denominator as it is.
⇒w−3+w2−5w(w−5)(w+4)
=w2−4w−3(w−5)(w+4)→(w≠5,w≠−4)
