Question

(2x+3/y)(2x-3/y)=? ANSWER THIS ​

Answer 1

cos (x+y)=cos x cos y-sinx sin y

Answer 2

Answer:

(2x)^2 - (3/y)^2

Step-by-step explanation:

this is due to the formula (a+b)(a-b) = (a)^2-(b)^2