=5y²-(3y²-5y-2)-2(y²-4y-5)=13y+12
5y²_(y_2)(3y+1)_2(y+1)(y-5)过程
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相关问题
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(5y+1)(5y^2-5y+1)-5(1+2y)(1-2y)
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解方程:3y²-(2y+1)(y-2)=(y-5)(y+1)
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4(x-1)=2(1-x) y-y-1/2=3-y+2/5 3y-1/2-5y+1/3=1-7y+1/6 谢谢
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{y+1=2x 5x-3y=7过程
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y-y-1/2=3-y+2/5
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解方程组【过程要完整】【1】5X+Y=7 【2】[X+1]-2[Y-1]=0 3X-Y=1 3[X+1]-5[Y-1]=
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方程5y(2y-3)=(y+2)(y-2)-1
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4(2Y+5)-3Y=7(Y-5)+4(2Y+1)
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4(2y+5)-3y=7(y-5)+4(2y+1)
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解下列方程组(要过程)(1)3x-y=5 (2)2x/3+3y/4=17/12 5y-1=3x+5 x/6-y/2=-(