1.(-xy)^5÷(-xy)^3 2.(-a^3)^5÷[(-a^2)·(-a^3)^2] 3.(x^6÷x^2)^2+x^9÷x^3·x^21.(-xy)^5÷(-xy)^32.(-a^3)^5÷[(-a^2)·(-a^3)^2]3.(x^6÷x^2)^2+x^9÷x^3·x^2
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1.(-xy)^5÷(-xy)^3 2.(-a^3)^5÷[(-a^2)·(-a^3)^2] 3.(x^6÷x^2)^2+x^9÷x^3·x^21.(-xy)^5÷(-xy)^32.(-a^3)^5÷[(-a^2)·(-a^3)^2]3.(x^6÷x^2)^2+x^9÷x^3·x^2
1.(-xy)^5÷(-xy)^3 2.(-a^3)^5÷[(-a^2)·(-a^3)^2] 3.(x^6÷x^2)^2+x^9÷x^3·x^2
1.(-xy)^5÷(-xy)^3
2.(-a^3)^5÷[(-a^2)·(-a^3)^2]
3.(x^6÷x^2)^2+x^9÷x^3·x^2
1.(-xy)^5÷(-xy)^3 2.(-a^3)^5÷[(-a^2)·(-a^3)^2] 3.(x^6÷x^2)^2+x^9÷x^3·x^21.(-xy)^5÷(-xy)^32.(-a^3)^5÷[(-a^2)·(-a^3)^2]3.(x^6÷x^2)^2+x^9÷x^3·x^2
(-xy)^5÷(-xy)^3
=(xy)^(5-3)
=(xy)^2
2.(-a^3)^5÷[(-a^2)·(-a^3)^2]
=(-a)^(3x5)÷[(-a^2)·(a^6) ]
=(-a)^15÷[(-a)^(2+6) ]
=(-a)^15÷[(-a)^8 ]
=a^(15-8)
=a^7
3.(x^6÷x^2)^2+x^9÷x^3·x^2
=[x^(6-2)]^2+x^(9-3+2)
=[x^(4x2)]+x^8
=x^8+x^8
=2x^8
2xy.(-3xy)÷(xy)
【x(xy-xy)-y(x-xy)】÷3xy
xy×(xy)²-3xy
(-3xy+2xy)-(4xy+xy)
(-xy)的5次方÷(xy)的3次方
计算:(xy)^5÷(xy)^3÷(-xy)
2xy(5xy的2次方+3xy-1)
2xy(5xy的2次方+3xy-1)
计算(xy)^5/(xy)^3/(-xy)要过程!
((xy+2)(xy-2)-2x²y²+5(xy-y)²)÷(2xy)
xy
1.已知x2-xy=5,xy-y2=-3.求式子3(x2-xy-xy+y2)的值2.已知x-y=3,xy=5,则代数式(3x-4y+5xy)-(2x-3y)+5xy的值是()
1.已知x的平方+xy=2,y的平方加xy=5,求x的平方+2xy+y的1.已知x的平方+xy=2,y的平方加xy=5,求x的平方+2xy+y的平方的值.2.已知x+y=6,xy=-4,求(5x-4y-3xy)-(8x-y+2xy)的值!
3xy-3xy-xy+2yx
xy^5-xy^4+xy-x因式分解
3xy-4xy-(-2xy)
4xy+6xy-3xy=?
3xy-4xy-(-2xy)