24xy
Объяснение:
(2x+3y)²-(3y-2x)² = ((2x)^2 + 2*2x*3y + (3y)^2) - ((3y)^2 - 2*2x*3y + (2x)^2) = 4x^2 + 12xy +9y^2 - (9y^2 - 12xy + 4x^2) = 4x^2 + 12xy + 9y^2-9y^2 + 12xy - 4x^2 = 12xy + 12xy = 24xy
24xy
Объяснение:
(2x+3y)²-(3y-2x)² = ((2x)^2 + 2*2x*3y + (3y)^2) - ((3y)^2 - 2*2x*3y + (2x)^2) = 4x^2 + 12xy +9y^2 - (9y^2 - 12xy + 4x^2) = 4x^2 + 12xy + 9y^2-9y^2 + 12xy - 4x^2 = 12xy + 12xy = 24xy