(x-1)方-4(x-1)+4=0(用因式分解计算)
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![(x-1)方-4(x-1)+4=0(用因式分解计算)](/uploads/image/f/15302-38-2.jpg?t=%28x-1%29%E6%96%B9-4%28x-1%29%2B4%EF%BC%9D0%28%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E8%AE%A1%E7%AE%97%29)
x方+6x=1x方+6x+9=1+9(x+3)方=10x+3=±√10x=-3±√10x方-14x=8x方-14x+49=8+49(x-7)方=57x-7=±√57x=7±√57x方+2x+2=8x+
点图把图放大看再问:(1)已知1/a-1/b=2,求2a-ab-2b/b-3ab-a的值(2)2x+6/4x-4x+x^2÷(x+3)再答:(1/a)-(1/b)=2(1/a)×ab-(1/b)×ab
依次为:(x-3)(x+1);(x+9)(x-2);(x-4)(x+1);(x+6)(x-1);(x-4)(x-9);(2x+1)(x+1)
5x³-6x²+15x-28____________________x+2)5x⁴+4x³+3x²+2x+15x⁴+10x³_
(4x的二次方-3x)-2(x的二次方+2x-1)-(x的二次方+x-1)=x的二次方-7x+3=(-3)的平方-7×(-3)+3=9+21+3=33
5X²-2=(√5x+√2)(√5x-√2)x四次方-4x²+4=(x²-2)²=(x+√2)²(x-√2)²x四次方+2x²-8
4*5次方(1+2*-4*方)
=2x^3+4x-1/3x^2-x-3x^2+2x^3=4x^3-10/3x^2+3x=4(-3)^3-10/3(-3)^2+3*(-3)=4*(-27)-10/3*9-9=-108-39=-147
X方-2x+1=9X方-2x-8=0(x-4)(x+2)=0x1=4,x2=-24X方+4X+1=2(2X+1)方=22x+1=根2或-根2x1=(根2-1)/2,x2=-(根2+1)/2五分之二X方
(x^2+2x+1)/(x^2-3x-4)=(x+1)^2/(x+1)(x-4)=(x+1)/(x-4)
把每个式子因式分解x的方+5x+4=(x+1)(x+4)x方-5x+6=(x-2)(x-3)………………
=[3x(x+1)/(x+1)(x²-x+1)]*[(x²+1)/(x²+1)(x²-1)]*(x-1)²/x]=[3x/(x²-x+1)]
5X方-2X-4/1=X方-2X+4/3这是利用因式分解解方程了吧先移向:5x^2-2x-1/4-x^2+2x-3/4=04x^2-1=0(2x+1)(2x-1)=0x=-1/2或者x=1/2
(X-1/2Y)方
=(x-4)/(x+1)(x-1)除以(x-4)(x+1)/(x+1)平方+1/(x-1)=(x-4)/(x+1)(x-1)乘以(x+1)平方/(x-4)(x+1)+1/(x-1)=(x-4)/(x+
(x-1)/(x^2+3x+2)+6/(2+x-x^2)-(10-x)/(4-x^2)=(x-1)/(x+1)(x+2)-6/(x+1)(x-2)-(x-10)/(x+2)(x-2)=[(x-1)(x
没有写清楚到底需要做什么再问:计算。再答:答案为0,过程在图片里
x/(x方+x+1)=1/4左边分子分母同除以x:1/(x+1+1/x)=1/4x+1/x+1=4x+1/x=3(x+1/x)^2=9【其中^代表乘方】x^2+1/x^2+2=9x^2+1/x^2+1
4x方-y方-4x+1=(2x-1)^2-y^2=(2x-y-1)(2x+y-1)
已知x方-4x+4+|y+x|=0,===>(X-2)^2+ly+xl=0====>x=2,y=-2,代入求解即可.(平方数>=0,绝对值>=0)再问:我问一下你的======是什么意思?你能帮我把过