Question

Unit 6 Rational Expression
Simplify u^2 - 2u
u^2 - 4
A. u
u + 4
U doesnt equal -2
B. 1
u + 2
U doesnt equal
c. u
u + 2
u doesnt -2 and u doesnt 2
D. u-2
u + 2
U doesnt equal -2 and U doesnt equal 2

Answer 1

\[\frac{ u^2-2u }{ u^2-4 }\]

Answer 2

For this one i'll have to factor these hold on

Answer 3

okay

Answer 4

\[\frac{ u^2-2u }{ (u-2)(u+2) }\]

Answer 5

@Schen421 also factor the top

Answer 6

\[\frac{ (u)(u-2) }{ (u+2)(u-2) }\]

Answer 7

Alright so since one of the numerator and denominator are the same, you can cancel out the (u-2) from the top and bottom

Answer 8

Remember that the x values for the denominator cannot be any number that makes the denominator a 0! if it makes the denominator a 0 then x cannot be that number

Answer 9

Okay so the (\[\frac{ u}{ u + 2} u \neq -2 and u \neq 2\]

Answer 10

Yes! Nicely done! =)

Answer 11

thanks