就三道!(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a-2a-3)-(2-a+3a)+3(1-a)等于?(2x加x-[4x-(3x-x)]其中,x等于负1又三分之二
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/29 01:05:32
就三道!(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a-2a-3)-(2-a+3a)+3(1-a)等于?(2x加x-[
就三道!(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a-2a-3)-(2-a+3a)+3(1-a)等于?(2x加x-[4x-(3x-x)]其中,x等于负1又三分之二
就三道!(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a
(4x减3y)-[-(3y-x)+(x-y)]-5x等于?
2(a-2a-3)-(2-a+3a)+3(1-a)等于?
(2x加x-[4x-(3x-x)]其中,x等于负1又三分之二
就三道!(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a(4x减3y)-[-(3y-x)+(x-y)]-5x等于?2(a-2a-3)-(2-a+3a)+3(1-a)等于?(2x加x-[4x-(3x-x)]其中,x等于负1又三分之二
1 A.B连直线 是去外婆家最近 B向河边做垂线 是去河边最近
2 1问 70/2+40/2=55
2问 mon=moc+noc=0.5aoc+0.5boc=0.5aob=0.5x
第一题原式=4x-3y-(-3y+x+x-y)-5x
=4x-3y+3y-x-x+y-5x
=y-3x
第二题原式=a²-2a-3-2+a²-3a²+3-3a
=-a²-5a-2
第三题原式=2x²+x-(4x²-3x²+x)
=x²
又∵x=-三分之五
∴原式=(-三分之五)²
=九分之二十五
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
(x+y)^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 ..
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
(x-4y)分之(3x)+(4y-x)分之(x+y)-(x-4y)分之(7y)
-3(x-y)(x-y)+3(x-y)
2(x-y)²-3(x-y)(-y-x)
[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x)
(2x+3y)(2x-y)-4y(2x-y) 因式分解
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2)/2(x-y)^2
(x减4y分之3x)加(4y减x分之x加y)减(x减4y分之7y)
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x^2/2y^2除以2y^2/x
3(x-1)³y-(1-x)³z m(x-y)²-x+y x²(x+y)(y-x)-xy(x+y)(x-y) 因式分解
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
(4x-3y)-[(-13y-x)+(x-y)]-5x
若x+y=4,则多项式1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y值是()