已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是
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已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是已
已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是
已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是
已知-x+2y=6,则3(x-2y)的平方+10y-5x+6的值是
已知-x+2y=6,那么-x+2y==-(x-2y)=6
也就是x-2y=-6
则3(x-2y)^2+10y-5x+6
=3(x-2y)^2-5(x-2y)+6
=3*(-6)^2-5*(-6)+6
=108+30+6
=144
174
答案是144
3(x-2y)^2+10y-5x+6
=3(x-2y)^2-5(x-2y)+6
=3*(-6)^2-5*(-6)+6
=108+30+6
=144
答案是144
84
-x+2y=6则2y-x=-6
3(x-2y)的平方+10y-5x+6=3(x-2y)的平方+5(2y-x)+6=3*(-6)的平方-5*6+6=84
3(x-2y)^2+5(-x+2y)+6
=3*(-6)^2+5*6+6
=108+30+6
=144
144
143
已知-x+2y=6,则-x+2y==-(x-2y)=6=x-2y=-6
3(x-2y)^2+10y-5x+6
=3(x-2y)^2-5(x-2y)+6
=3*(-6)^2-5*(-6)+6
=108+30+6
= 144
已知-x+2y=6,那么-x+2y==-(x-2y)=6
也就是x-2y=-6
即3(x-2y)^2+10y-5x+6
=3(x-2y)^2-5(x-2y)+6
=3*(-6)^2-5*(-6)+6
=108+30+6
=144
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