计算:(2x-y)(2x+y)+(2x+y)²
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计算:(2x-y)(2x+y)+(2x+y)²计算:(2x-y)(2x+y)+(2x+y)²计算:(2x-y)(2x+y)+(2x+y)²(2x-y)(2x+y)+(2x
计算:(2x-y)(2x+y)+(2x+y)²
计算:(2x-y)(2x+y)+(2x+y)²
计算:(2x-y)(2x+y)+(2x+y)²
(2x-y)(2x+y)+(2x+y)²
=(2x+y)(2x-y+2x+y)
=(2x+y)*4x
=4x(2x+y)
4x平方-y平方+4x平方+y平方+4xy=8x平方+4xy
4X²-y²+4X²+4XY+Y²
=8X²+4XY
原式=(2x+y)(2x-y+2x+y)
=(2x+y)4x
=8x²+4xy
解原式=4x²-y²+4x²+4xy+y²
=8x²+4xy
(2x-y)(2x+y)+(2x+y)²
=(2x+y)(2x-y+2x+y)
=4x(2x+y)
=8x²+4xy
原式=4X²-y²+4X²+4XY+Y²
=8X²+4XY
原式=(2x+y)(2x-y+2x+y)
=4x(2x+y)
=8x∧2+4xy
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