计算1-1-x分之1-x的平方-1分之x平方-2x 1
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/13 12:33:29
[(3-x)/(x-1)-1]/[(x-2)/(x^2-2x+1)]=[(3-x-x+1)/(x-1)]*[(x^2-2x+1)/(x-2)}=[(-2x+4)/(x-1)]*[(x^2-2x+1)/
=1/(x-5)-6/(x+5)(x-5)-(x+1)/2(x+5)=2(x+5)/2(x+5)(x-5)-12/2(x+5)(x-5)-(x+1)(x-5)/2(x+5)(x-5)=(2x+10-1
1、(x+1)/(x-2)2、?3、同学,括号!
x的平方-9分之1-x-3分之1除以x-1分之6+2x=1/(x^2-9)-1/(x-3)*(x-1)/2(3+x)=(2-(x-1))/2(x^2-9)=(3-x)/2(x^2-9)=-(x-3)/
x平方+x+1+(1-x)分之x立方=x平方+x+1+(1-x)分之(x立方-1)+(1-x)分之1=x平方+x+1+(1-x)分之(x-1)(x平方+x+1)+(1-x)分之1=x平方+x+1-(x
x的平方-4分之x+1*(x+2)-x的平方+8x+16分之x的平方-16除以(x-4)=x的平方-四分之x+x+2-x的平方+8x+十六分之x的平方-(x-4分之16)=(x的平方-x的平方+十六分
原式=(x+1)²(x-1)²/(x+1)²(x-1)²÷(x-1)²/(x+1)(x-1)=1×(x+1)(x-1)/(x-1)²=(x+
)【(x²-2x+1)/(x²-1)】÷【(x-1)/(x²+x)】=【(x-1)²/(x+1)(x-1)】÷【(x-1)/x(x+1)】=【(x-1)/(x+
=1/(x-5)-6/(x+5)(x-5)-(x+1)/2(x+5)=2(x+5)/2(x+5)(x-5)-12/2(x+5)(x-5)-(x+1)(x-5)/2(x+5)(x-5)=(2x+10-1
[(x的平方-3x)分之(x+3)-(x的平方-6x+9)分之(x-1)]÷x分之(x-9)=[(x+3)/(x^2-3x)-(x-1)/(x^2-6x+9)])]÷[(x-9)/x]=[(x+3)/
=[(x+2)/x(x-2)-(x-1)/(x-2)²]×(x-4)/x=[(x-2)(x+2)-x(x-1)]/x(x-2)²×(x-4)/x=(x-4)/x(x-2)²
x的平方-2x+1分之x-3÷x-1分之x的平方-9=[(x-3)/(x-1)²]*[(x-1)/(x+3)*(x-3)]=1/(x-1)(x+3)
见下 又见下
题目等于{2X-(X+1)}/{(X-1)(X+1)}化简等于(x-1)分之一楼下的平方差公式怎么到最后的倒数第二步中(x+1)不见了?
原式=1/(x-3)-1/2(x+3)-x/(x-3)²=[2(x+3)(x-3)-(x-3)²-2x(x+3)]/[2(x+3)(x-3)²]=(2x²-18
(x平方+x+1)-(x-1)分之(x立方)+(x+1)分之1=(x平方+x+1)-(x-1)分之(x立方-1)-(x-1)分之1+(x+1)分之1=(x平方+x+1)-(x平方+x+1)-(x-1)
=7x²-4/9x+1再问:?过程再答:你能把我的式子复制下再输入一下原题吗再问:=7x²-4/9x+1;{4(x)的平方-(9分之4x)+1}{-3(x)的平方}再答:哦,是(4
x-y分之2x的平方-y-x分之x的平方-4xy+x-y分之2y的平方-x的平方=2x/(x-y)-(x²-4xy)/(y-x)+(2y-x²)/(x-y)=(2x+x²