因式分解帮忙下,一定采纳
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34²+34×32+16²
=34²+2×34×16+16²
=(34+16)²
=2500
4(x+y)²-4(x+y)(x-y)+(x-y)²
=[2(x+y)-(x-y)]²
=(2x+2y-x+y)
=x+3y)
=34²+2×34×16+16²
=(34+16)²
=2500
4(x+y)²-4(x+y)(x-y)+(x-y)²
=[2(x+y)-(x-y)]²
=(2x+2y-x+y)
=x+3y)
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(3)原式=-(1-xy/2)^2
(6)原式=(2(x+y)-(x-y))^2=(2x+2y-x-y)^2=(x+y)^2
(2)原式=(34+16)^2=50^2=2500
(6)原式=(2(x+y)-(x-y))^2=(2x+2y-x-y)^2=(x+y)^2
(2)原式=(34+16)^2=50^2=2500
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