25(x+y)^2-16(x-y)^2因式分解帮忙....
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x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(12-2x)/X=(-16-2Y)/Y X^2+Y^2=25 Y
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(x+y)^2-16(x-y)^2
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25x的2次方-16y的2次方 等等 的分解因式题 1.(a-b)乘(x-y)-(b-a)乘(x-y) 2.4+12乘(x-y)+9乘(x+y) 3.x的3次方-9x 4.16x的4次方-1 5.6 x y的2次方 -9x的2次方y-y的3次方 6.(2a-b)的2次方+8ab 全都是分解因
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16(x-y)^2-25(x+y)^2