问题描述:
计算 (2y-3)(y+4) (-5x+2)∧2 (2x-3y)(2x+3y) (2x-5)(x-2)-(-4+3x)(3x+4)
(2y-3)(y+4)
(2x-3y)(2x+3y)
(-5x+2)∧2
(2x-5)(x-2)-(-4+3x)(3x+4)
(t+5)∧2-(5-t)∧2
(2y-3)(y+4)
(2x-3y)(2x+3y)
(-5x+2)∧2
(2x-5)(x-2)-(-4+3x)(3x+4)
(t+5)∧2-(5-t)∧2
问题解答:
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