Question

Which factor do you cancel from the numerator and denominator to simplify x^2 + 3x -4 / x^2 -16?

Answer 1

\(\Large\color{red}{ x^2 + 3x -4 =(x-1)(x+4) }\)
\(\Large\color{blue}{ x^2 -16 =(x-4)(x+4) }\)

Answer 2

x - 3

Answer 3

That's what I guess.
x + 3 and x - 3 cancel out, so it makes sense

Answer 4

x+3 and x-3 don't cancel..

Answer 5

(x-3)? o.o
When Solomon factored both the numerator and denominator, he factored each into two binomials.
(x+4) is the common factor in both the numerator and denominator. That factor will cancel, and you will be left with (x-1) in the numerator and (x-4) in the denominator.

Answer 6

Okay x.x Thanks, Bunni ♥