Question

Simplify the rational expression. State any excluded values.

Answer 1

@Michele_Laino ?

Answer 2

ok!

Answer 3

=)

Answer 4

do you know how to solve the equation below:
\[x ^{2}-x-6=0\]

Answer 5

I'm sorry, not really... =(

Answer 6

why?

Answer 7

does your teacher explained the quadratic equations?

Answer 8

I think so, but I'm so bad at math, I can't ever remember things. I'm very sorry.

Answer 9

Ok1 never mind, please when we have a quadratic equation, namely:
\[ax ^{2}+bx+c=0\]
then in order to find its solutions we have to apply this formula:
\[x=\frac{ -b \pm \sqrt{b ^{2}-4*a*c} }{ 2*a }\]
be careful there are two signs, namely +/-, because you have to evaluate them one a time

Answer 10

Oh, alright.

Answer 11

now, please write the coefficient a, b, c comparing your equation , namely x^2-x-6=0, with the equation ax^2+bx+c=0

Answer 12

Okay, I think I got it from here. That's where I usually get confused. Thanks again!! =)

Answer 13

is it all ok?

Answer 14

Yes, thank you.

Answer 15

thank you!

Answer 16

please, can I go for helping another student or you need help?

Answer 17

Yes, you cann go. Thank you for your help!

Answer 18

thanks again!