Which factor do you cancel from the numerator and denominator to simplify ?
x^2 + 4x - 5 / x^2 - 25

Question

Which factor do you cancel from the numerator and denominator to simplify ?
 x^2 + 4x - 5 / x^2 - 25

sburchette · Answer

If you factor the numerator and denominator you will get$$\frac{(x-1)(x+5)}{(x+5)(x-5)}$$ Because there is an (x+5) in both the numerator and denominator, they will cancel each other and you will be left with $$\frac{x-1}{x-5}$$

mimi_x3 · Answer

$$\large \frac{x^{2}+4x-5}{x^{2}-25}  $$
First one: $x^2+4x-5$
Trinomials: $x^2+x(a+b)+ab$
 
Second one: $x^2-25$
Difference of two squares: $(a+b)(a-b)=a^2-b^2$

anonymous · Answer

Multiple choice lol 

x + 4
x - 4
x - 5
x + 5

mimi_x3 · Answer

Well, which one do you think is right?

mimi_x3 · Answer

wait..the choices are wrong..

anonymous · Answer

That's what it looked like to me but thats exactly what they are