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

Question

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

Answer 1

(2y-3x)²-(3x+2y)(2y-3x)==4у² - 12 xy + 9x² - (4y²-9x²)==4у² - 12 xy + 9x² - (4y²-9x²)=

=4y² - 12xy + 9 x² - 4y² + 9x² = 18x² - 12 xy