计算:(2x-3y)^2(2x+3y)^2

2024-12-20 00:30:32
推荐回答(2个)
回答1:

原式 = (4x² - 9y²)²

回答2:

(2x-3y)^2*(2x+3y)^2
=[(2x-3y)*(2x+3y)]^2
=(4x^2-9y^2)^2
=16x^4-72x^2y^2+81y^4