如果3分之9-2a乘以x的平方-3x=1
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/11 00:35:36
(9-2a)x*x/3-3x+1=0一元一次方程x是一次方,所以第一项里9-2a就应该为零.即9-2a=0a=4.5
解-3x^(2a-1)y与2/3x^9y^(-b)是同类项∴2a-1=9,-b=1∴a=5,b=-1∴A²-AB+B^2010=5²-5×(-1)+(-1)^2010=25+5+1
[3a^3/(x+y)]^3*(x^2-y^2)/[(y-x)/(x+y)]^2=27a^9/(x+y)^3*(x+y)*(x-y)*(x+y)^2/(x-y)^2=27a^9/(x-y)
(1-x)^2/(x^2+4x+4)/(x-1)^2*(x^2+3x+2)/(x-1)=(x+1)/(x+2)(x-1)=(x+1)/(x^2+x-2)再问:是1-x的平方,不是(1-x)的平方再答:
分式的计算1.3a除以4b乘以16b除以9a的平方=(3a/4b)*(16b/9a^2)=4/3a2.12xy除以5a除以8x的平方y=(12xy/5a)/8x^2y=3/10ax3.-3xy除以3x
你用文字表达出来的式子不太好理解,还是试着解了一下:2a的平方b-4b的平方分之-3a[2a²b-(-3a)]/(4b²)=(8a²b³)/(4b²)
x/(x²-3x)×(x²-9)=x/x(x-3)×(x-3)(x+3)=x+3
2(a^3)b×√[(a^2)b]×3×√[(a/b)÷(1/2)×√[(b^2)/a]=[2(a^3)b×3×2]×{√[(a^2)b]×√[(a/b)×√[(b^2)/a]}=12(a^3)b×√
首先计算(x+3)/(x^2-1)乘以(x^2-2x+1)/(x^2+4x+3),分解因式可以得到(x+3)/(x+1)(x-1)乘以(x-1)^2/(x+3)(x+1),约分后等于(x-1)/(x+
原式=3分之1*(x²-3xy-10y²)=3分之1*(x-5y)(x+2y)
)【(x²-2x+1)/(x²-1)】÷【(x-1)/(x²+x)】=【(x-1)²/(x+1)(x-1)】÷【(x-1)/x(x+1)】=【(x-1)/(x+
=(x+2y)(x-2y)/(x+2)²×(x+2)/3x(x+2y)=(x-2y)/3x(x+2)=(x-2y)/(3x²+6x)
(8x^2/9y^2)*(3y/-4x)=-2x/3y不懂请追问,满意请采纳~再问:过程????再答:就相当于(8x的平方除以-4x)乘以(3y除以9y的平方)=-2x乘以3y分之一=负的3y分之2x
(x/2y)²×(y/2x)-x/y²÷(2y²/x)=x²/2y×(y/2x)-(x/y²)×(x/2y²)=x/8y-x²/(
[(x-2)分之3x-2分之x]×x分之(x²-4)=[2(x-2)分之6x-2(x-2)分之(x²-2x)]×x分之[(x+2)(x-2)]=2(x-2)分之(4x-x²
[1]y+2分之y的平方-6y+9除以[3-y]=(3-y)²/(y+2)×/(3-y)=(3-y)/(y+2)[2]x的立方分之x的平方y乘以[-y分之1]=x²y/x³
4-4x+4x的平方分之2x-6除以(x-3)乘以3-x分之(x+3)乘以(x-2)=(2x-6)÷4÷(x-3)×(x+3)÷(3-x)×(x-2)=(x-3)÷2÷(x-3)×(x+3)÷(3-x
你是要问A,B,C的得数吗?麻烦您下次把题出的严谨一点,这样易懂!7/4×(a-2)²+7×|c|=0根据0+0=0解a-2=0a=2根据0×0=0解7×|0|=0c=0a和c都是0不明白.
4b分之3a乘以9a的平方分之2b=3a/(4b)×2b/(3a)²=1/(6a)x的平方+2x+1分之x除以x的平方-1分之x的平方+2x=x/(x+1)²÷[x(x+2)/(x
对称轴x=-1/a=1/3a=-3y=-3x^2+2x+c=-3(x-1/3)^2+c+1/3c+1/3=-1c=-4/3a*c=(-3)*(-4/3)=4