很着急,(xy)^-1a^^x^-a^^y^3x^+6xy+3y^(x-y)^+4xy4a^-3b(4a-3b)^是2次方的意思,^^是四次方的意思.
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很着急,(xy)^-1a^^x^-a^^y^3x^+6xy+3y^(x-y)^+4xy4a^-3b(4a-3b)^是2次方的意思,^^是四次方的意思.
很着急,
(xy)^-1
a^^x^-a^^y^
3x^+6xy+3y^
(x-y)^+4xy
4a^-3b(4a-3b)
^是2次方的意思,^^是四次方的意思.
很着急,(xy)^-1a^^x^-a^^y^3x^+6xy+3y^(x-y)^+4xy4a^-3b(4a-3b)^是2次方的意思,^^是四次方的意思.
(xy)^2-1
=(xy+1)(xy-1)
a^4x^2-a^4y^2
=a^4(x^2-y^2)
=a^4(x+y)(x-y)
3x^2+6xy+3y^ 2
=3(x^2+2xy+y^2)
=3(x+y)^2
(x-y)^2+4xy
=x^2-2xy+y^2+4xy
=x^2+2xy+y^2
=(x+y)^2
4a^2-3b(4a-3b)
=4a^2-12ab+9b^2
=(2a-3b)^2
(xy+1)(xy-1)
(xy+1)(xy-1)
a^^(x+y)(x-y)
3(x+y)^
(x+y)^
(2a-3b)^
(xy+1)(xy-1)
a^^(x+y)(x-y)
3(x+Y)^
(x+Y)^
(2a-3b)^
(xy)^-1
=[XY+1][XY-1]
a^^x^-a^^y^
=[a^x+a^y][a^x-a^y]
=a^^[x+y][x-y]
3x^+6xy+3y^
=3[x^+2xy+y^]
=3[x+y]^
(x-y)^+4xy
=x^+y^-2xy+4xy
=x^+y^+2xy
=[x+y]^
4a^-3b(4a-3b)
=4a^-12ab+9b^
=[2a-3b]^
(xy+1)(xy-1)
a^^(x+y)(x-y)
3(x+y)^
(x+y)^
(2a-3b)^