Question

Simplify 7x 42 / x^2 13x 42

Answer 1

$\frac{7x 42}{x^{2}13x42 } = \frac{7x}{ x^{2} 13x} = \frac{7x}{13 x^{3} } = \frac{7}{13 x^{2} }$

The answer is $\frac{7}{13 x^{2} }$

Answer 2

That is not an answer choice...

Here is the answer 7/x+7

Now here is why: You have to use your box method to find out the 2 x's that fit together for the quadratic that is in the denominator. From what I did I got (x+6)(x+7). Now simplifying the numerator is just simply 7(x+6). Now both the numerator and the denominator have the factor (x+6) so you simply cancel, or "cross" them out of the problem. Now you are left with 7/x+7.

Your welcome :)