作业帮数学因式分解(X+Y )3-(X2-Y2)(X-Y),(X+Y )3即为X+Y的三次方77+(35X-7)2=(35X+4）2还有一道是已知x2+y2-6x+2y+|z+3|+10=0,求x,y,帮我解决了这么多题，可只能采纳一个最佳，我就随便选了，没选到的抱歉了
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数学因式分解(X+Y )3-(X2-Y2)(X-Y),(X+Y )3即为X+Y的三次方77+(35X-7)2=(35X+4）2还有一道是已知x2+y2-6x+2y+|z+3|+10=0,求x,y,帮我解决了这么多题，可只能采纳一个最佳，我就随便选了，没选到的抱歉了
数学因式分解(X+Y )3-(X2-Y2)(X-Y),
(X+Y )3即为X+Y的三次方
77+(35X-7)2=(35X+4）2
还有一道是已知x2+y2-6x+2y+|z+3|+10=0,求x,y,
帮我解决了这么多题，可只能采纳一个最佳，我就随便选了，没选到的抱歉了
数学因式分解(X+Y )3-(X2-Y2)(X-Y),(X+Y )3即为X+Y的三次方77+(35X-7)2=(35X+4）2还有一道是已知x2+y2-6x+2y+|z+3|+10=0,求x,y,帮我解决了这么多题，可只能采纳一个最佳，我就随便选了，没选到的抱歉了
(X+Y )3=(x+y)(x2-xy+y2),(x2-y2)(x-y)=(x+y)(x-y)2=(x+y)(x2-2xy+y2),提取(x+y),其余的合并计算结果为xy,所以结果为xy(x+y).
(x+y)^3-(x+y)(x-y)^2
=x³+3x²y+3xy²+y³-(x³-x²y-xy²+y³)
=x³+3x²y+3xy²+y³-x³+x²y+xy²-y³
=4x²y+4xy²
=4xy(x+y)谢谢，再请教下两道题，一道是...
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=x³+3x²y+3xy²+y³-(x³-x²y-xy²+y³)
=x³+3x²y+3xy²+y³-x³+x²y+xy²-y³
=4x²y+4xy²
=4xy(x+y)
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=（X+Y)3-(X+Y)(X-Y)(x-Y)
=(X+Y)3-(X+Y)(X-Y)2
=（X+Y)[（X+Y)2-(X-Y)2]
=(X+Y)(X+Y+X-Y)(X+Y-X+Y)
=(X+Y)(2X)(2Y)
=4XY(X+Y)谢谢，再请教下两道题，一道是解方程，
77+(35X-7)2=(35X+4）2
还有一道是已知x2+y2-6x+2...
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=（X+Y)3-(X+Y)(X-Y)(x-Y)
=(X+Y)3-(X+Y)(X-Y)2
=（X+Y)[（X+Y)2-(X-Y)2]
=(X+Y)(X+Y+X-Y)(X+Y-X+Y)
=(X+Y)(2X)(2Y)
=4XY(X+Y)
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