Question

Help will givemedal

Factor: 36t^2-81y^2

Answer 1

what might the question be?

Answer 2

ooh factor
difference of two squares
\[a^2-b^2=(a+b)(a-b)\] with \[a=6t, b=9y\]

Answer 3

is that how it is ?

Answer 4

Yes!

Answer 5

and from there /

Answer 6

Just plug in a and b and you're done!

Answer 7

$$
a^2-b^2=(a+b)(a-b)\\
a=6t, b=9y\\
(6t)^2-(9y)^2=?
$$

Answer 8

(2t+3y) (2t-3y) ?

Answer 9

No.
$$
a=6t, b=9y
$$
Then just plug in a and b here:
$$
(a+b)(a-b)
$$

Answer 10

so, (6t+9y) (6t-9y) ?