Asked by mysterychicken

True or False: The least common denominator of each denominator in the following rational expression is (z-4)(z+4)(z-1)(z+1):
8 / z^2+5z+4 = 1 / z-4 + 1 / z-1

I am stuck on this one...
Answered by Steve
z^2+5z+4 = (z+1)(z+4)

Now you have denominators
(z+1)(z+4), (z-1) and (z-4)

They have no factors in common, so the LCD is the product of all the denominators. The statement is TRUE.
Answered by mysterychicken
Ok, thank you!
Answered by Caya
Thus sucks bro
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