(2x-5y)（2x+5y）=4x^2-25y^2
(2x-5y)·_____=4x^2-25y^2
4个回答
相关问题
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因式分解-5a^2+25a;25x^2-16y^2;x^3-25x;x^2(x-y)+y^2(y-x);x^2y^4-1
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（x+5y)(x-5y）等于A.25y2-x2B.x2+25y2C.x2-25y2D.x2+10xy+25y2
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(5x^4-10x^3y+25x^2y^2)/(-5x^2)
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解方程组4/x^2+25/y^2=25,2/x+5/y=1
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1.{2x+y=-2,2x-y=6 2.{0.25x-0.5y=2,0.4x+0.25y=20
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(5x^4-10x^3y+25x^2y^2)除以(-5x^2)=_____________________
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1,{3x+2y=13 {5x-2y=11 ,2,{5x+2y=25 {3x+4y=15
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⑴y^2+4y-5⑵y^4-26y^2+25⑶(a-b)^2+6(b-a)+5⑷2x^2-5x-12⑸3x^2-5x-2
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两元一次方程组3Y-X=5 5Y+2X=25.2 还有X/5-Y/2=2 2X+3Y=4
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x+2y=9 3x－2y=-1 5x+2y=25 3x+4y=15 2x+3y=