(1)(2m+3)(2m-2)(2)x(x+1)+(2-x)(2+x)(3)(3x-y)(3x+y)+y(x+y)(4)(a+b)(a-½b)-(3a-2b)(3a+2b)用平房差公式进行计算:(1)1007×993 (2)108×112
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/27 14:49:16
(1)(2m+3)(2m-2)(2)x(x+1)+(2-x)(2+x)(3)(3x-y)(3x+y)+y(x+y)(4)(a+b)(a-½b)-(3a-2b)(3a+2b)用平房差公式进
(1)(2m+3)(2m-2)(2)x(x+1)+(2-x)(2+x)(3)(3x-y)(3x+y)+y(x+y)(4)(a+b)(a-½b)-(3a-2b)(3a+2b)用平房差公式进行计算:(1)1007×993 (2)108×112
(1)(2m+3)(2m-2)
(2)x(x+1)+(2-x)(2+x)
(3)(3x-y)(3x+y)+y(x+y)
(4)(a+b)(a-½b)-(3a-2b)(3a+2b)
用平房差公式进行计算:
(1)1007×993 (2)108×112
(1)(2m+3)(2m-2)(2)x(x+1)+(2-x)(2+x)(3)(3x-y)(3x+y)+y(x+y)(4)(a+b)(a-½b)-(3a-2b)(3a+2b)用平房差公式进行计算:(1)1007×993 (2)108×112
小朋友:
你下面的问题主要是利用平方差公式:X2-Y2=(X+Y)(X-Y)
记下来这些题你都会做的
(2m+3)(2m-2)=4m2+6m-4m-6=4m2+2m-6
x(x+1)+(2-x)(2+x)=x2+x+4-x2=x+4
(3x-y)(3x+y)+y(x+y)=9x2-y2+xy+y2=9x2+xy
(a+b)(a-½b)-(3a-2b)(3a+2b)=a2+ab-1/2b2-1/2ab= a2+1/2ab-1/2b2
(1)1007×993=(1000+7)(1000-7)=10002-72=999951
(2)108×112=(110+2)(110-2)=1102-22=12096
你好大哦,太难了,我不会我还上小学耶,帮不了耶!
你上初中吧..
若多项式5x*x-2mxy-3y*y+4xy-3x+1中不含xy项,求(-(m*m*m)+2(m*m)-m+1)-(m*m*m+2m*m-m+4)
m x平方-2x-m+1
因式分解(m-1)x-(x^2-m)
x^2-(2m+1)x+m^2+m
计算x^3m/(x^m-1)-x^2m/(x^m+1)-1/(x^m-1)+1(x^m+1)
x^(3)*x^(2m +1)*x^(m)=x^(31) 求m的值
若方程(2m.m+m-3)x+(m.m-m)y-4m+1=0表示一条直线.则实数m满足
已知函数y=(m+1)x^m^2-3m-2+(m-1)x(m是常数)
2x-3m
(1-m)x^2+(m-3)x+2 十字相乘
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
计算:(1).(2x-3y)/(y-x)-(x+2y)/(x-y) (2).[5m/(m-3)+2m/(m+3)]*(m^2-9)/m
X2-(2m+1)x+2m
mx^2-(m+1)x-m
解关于x的不等式:x^2-(3m+1)x+2m^2+m>0
分解因式x^m+3-2x^m+2y+x^m+1y^2
分解因式:x^m+3-2x^m+2*y+x^m+1*y^2
分解因式x^m+3-(2x^m+2)y+(x^m+1)y^2