Question

t^2-81
@sethRB26DETT

Answer 1

IS IT T SQUARED - 81?

Answer 2

yes

Answer 3

ok and what am i doing with this equation?

Answer 4

factoring

Answer 5

First you want to factor out the numerator:
t^2 - 81 =
(t+9)*(t-9)
So now your problem looks like this:
((t+9)*(t-9))/((t+9)^2)
The denominator can also be rewritten as (t+9)(t+9), so:


((t+9)*(t-9))/((t+9)*(t+9))
Now you can cancel an (t+9) from the numerator and denominator:
(t-9)/(t+9)
So your simplified answer is (t-9)/(t+9).

In answer to your question, your final answer doesn't have to have parenthesis, I just put them in there so it is easier to tell what you are dividing . If you write it like this:
t-9/t+9, a person might think the middle term is -9/t instead of the whole equation being part of a fraction. I just wanted to make my answer as clear as possbile for you! Hope this help. :D

Answer 6

@kaylak12345 is that what you needed?

Answer 7

yes a few more questions (5y-3y^5)^2