Question

( 3x² - 5xy³) (3x² + 5xy³)

Answer 1

\(\left(3x^2-5xy^3\right)\left(3x^2+5xy^3\right)\)

\(=\left(3x^2\right)^2-\left(5xy^3\right)^2\)

\(=9x^4-25x^2y^6\)

Answer 2

\(\left(3x^2-5xy^3\right)\left(3x^2+5xy^3\right)\\ =9x^4-25x^2y^6\)