计算:(3-2x)(-3-2x) (2分之x 3)的平方
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==(x+3)(x-2)(x+1)再问:嗯就是想问下最后结果是……?00再答:(x3-x2-2x+3x2-3x-6=x3+2x2-5x-6(x后的数字表示次数)
=x²+3x-(x²-3x+2)=x²+3x-x²+3x-2=6x-2
3/(x-2)-2/(x-1)=3(x-1)/(x-2)(x-1)-2(x-2)/(x-2)(x-1)=[3(x-1)-2(x-2)]/(x-2)(x-1)=(3x-3-2x+4)/(x-2)(x-1
=6x²-10x-3x+5=6x²-13x+5如果您认可我的答案,请点击下面的“选为满意回答”按钮,【供参考,\(^o^)/~】
原式=[x/x(x-3)](x+3)(x-3)=(x+3)(x-3)/(x-3)=x+3
-2x-(3x-3)=-2x-3x+3=3-5x
(x^2+5x+4)(x^2+5x+6)=(x^2+5x)^2+10(x^2+5x)+24=x^4+10x^3+35x^2+50x+24
移项5x>15x>3
(-x-2y)*(3x-y)=-3x^2-5xy+2y^2
(1)(2x-2)(3x+2)=6x²+4x-6x-4=6x²-2x-4(2)(x+5)²-(x-5)²=(x²+10x+25)-(x²-1
(x+2)/(x^2-x-6)+2x/(x^2-3x)-x/(x^2-6x+9)=(x+2)/[(x-3)(x+2)]+2x/[x(x-3)]-x/[(x-3)^2]=1/(x-3)+2/(x-3)-
(x+1)(x-2)(x-3)(x-6)==(x+1)(x-6)(x-2)(x-3)=(x^2-5x-6)(x^2-5x+6)=(x^2-5x)^2-36=x^4-10x^3+25x^2-36
5-(x-2)(2x-3)=5-(2x²-7x+6)=5-2x²+7x-6=-2x²+7x-1如果不懂,祝学习愉快!
原式=[x/(x-3)]-[5x/(x²-x-6)]=[x/(x-3)]-(5x)/[(x-3)(x+2)]=[x(x+2)]/[(x-3)(x+2)]-(5x)/[(x-3)(x+2)]=
3x/(x-5)-2x/(5-x)=3x/(x-5)+2x/(x-5)=5x/(x-5)
2x*4x-3x=8x平方-3x
2x^2-3x-52x-5×x12*(1)+(-5)*1=-3十字交叉法=(2x-5)(x+1)
原式=-18x^5
原式=(x+3)(x-2)(x+1)
(X-1)(X-2)(X-3)(X-4)=(X-1)(X-4)(X-2)(X-3)=(x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25