Question

**CHECK**+MEDAL**
Simplify.
u^2+3u/u^2−9

A. u/u−3 ,u≠−3andu≠3

B. u/u−3 ,u≠−3

C. 1/u−3 ,u≠−3

D. u+3/u−3 ,u≠−3andu≠3

Answer 1

C?

Answer 2

how did you get that ?? :-)

Answer 3

My sister googled it :/ :)

Answer 4

hahh let's do it :-)
apply difference of square which is \[\huge\rm (a^2 - b^2) = (a+b)(a-b)\]

Answer 5

take square root of first term and square of 2nd term
of u^2 - 9 let me know what you get

Answer 6

I dunno :/ this is my sisters question shes in 9th im in 8th.......

Answer 7

hmmm so probably she is older than you

Answer 8

Right

Answer 9

Is her answer correct?

Answer 10

okay tell her to apply difference of square method
take square of both term
write that in parentheses one sign should be negative one positive