Question

4y^2-81x^2 factor show steps

Answer 1

(2y+9x)(2y-9x)

Answer 2

4y^2-81x^2
take the square root of all variables and numbers involved
(4 and 81,x^2 and y^2)
so...
(2y-9x)(2y+9x)

Answer 3

is there anything you dont understand?

Answer 4

equation is of the form
\[(a^2-b^2)=(a+b)(a-b)\]
here, a=2y, b= 9x