Question

4. Simplify (3x+5y) (3x-5y) by using identity​

Answer 1

Hope this can help you.

Answer 2

$\huge\fbox\red{Answer}$

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

$a = 3x \\ b = 5y$

$(3x + 5y)(3x - 5y) \\ {(3x)}^{2} - {(5y)}^{2} \\ 9 {x}^{2} - 25 {y}^{2}$