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3 years ago

9

Someone help with this please ?

1 answer:

artcher [175]3 years ago

8 0

M + n = 5

Alright, so unFOILing the numerator, you'd get (x+5)(x-3). However, since (x-3) is not there in the second fraction, we know that the denominator must also have had (x-3), causing them to cancel.

Now that we know one of the parts to the denominator is (x-3), the second fraction tells us the other: (x-4).

Thus, FOILing (x-3)(x-4) gives us x^2 - 7x + 12. So, m = -7 and n = 12, and just add them up.

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