Question

Multiply and simplify
y^2-y-2/y^2-2y+1*y-1/y-2. I am just confused on this one my professor is doing the problem in some way I don't understand, show steps please.

Answer 1

Is this what you're trying to ask?\[\frac{y^2-y-2}{y^2-2y+1}\times\frac{y-1}{y-2}\]

Answer 2

\[(y^2-y-2/y^2-2y+1)\times( y-1/y-2)\]

factor it.
\[(y+1)(y-2)/ (y-1)(y-1)\div (y-1/y-2)\]

then cancel.

the answer would be. \[y+1/y-1 \]

Answer 3

yes
i dont know how to put the fraction line on the editor

Answer 4

so basically you have to do group like terms or no.

Answer 5

you factor the quadratics:\[\frac{(y+1)(y-2)}{(y-1)(y-1)}\times\frac{y-1}{y-2}\]then you cancel the y-1 and the y-2 and get:\[\frac{y+1}{y-1}\]

Answer 6

to do fractions you use \frac{numerator}{denominator}

Answer 7

okay I will try that.

Answer 8

I still can't do the fractions in the equation editor.

Answer 9

me too. haha how do you that.?

Answer 10

not for sure

Answer 11

just type "frac{a}{b}" in the equation editor.