Question

what is dis 4x^-9y^

Answer 1

I wonder that myself, can you take a quick screenshot of the material?

Answer 2

i meant how do i solve dis because i dont know LOLLLL!!!!

Answer 3

ahemm, well, you see, we dunno what you have, what you typed in looks like
\(\huge 4x^{-9y} \)

Answer 4

ohhhh it's 4x to the 2nd power minus 9y to the 2nd power

Answer 5

\(\huge 4x^2-9y^2 ?\)

Answer 6

yes

Answer 7

http://www.mathexpression.com/image-files/diff-of-squares.png

Answer 8

pay close attention to "4" and "9"

Answer 9

alright

Answer 10

is this right (4x-9y)(X+Y)

Answer 11

well

Answer 12

if you check \(4 = 2^2\) and \(9 = 3^2\)

Answer 13

$$
\large 4x^2-9y^2 \implies (2x)^2-(3y)^2\\
(a^2-b^2) = (a-b)(a+b)
$$

Answer 14

so it's (2x-3y)2nd power

Answer 15

well, no quite

Answer 16

\((2x-3y)^2 = (2x-3y)(2x-3y)\)

Answer 17

same * same, \(same^2\)

Answer 18

$$
\large 4x^2-9y^2 \implies (2x)^2-(3y)^2\\
(a^2-b^2) = (a-b)(a+b)
$$