5(2x-7y)-3(4x-10y) 去括号,再合并同类项,
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5(2x-7y)-3(4x-10y)去括号,再合并同类项,5(2x-7y)-3(4x-10y)去括号,再合并同类项,5(2x-7y)-3(4x-10y)去括号,再合并同类项,5(2x-7y)-3(4x
5(2x-7y)-3(4x-10y) 去括号,再合并同类项,
5(2x-7y)-3(4x-10y) 去括号,再合并同类项,
5(2x-7y)-3(4x-10y) 去括号,再合并同类项,
5(2x-7y)-3(4x-10y)
=10x-35y-12x+30y
=-2x-5y
=10x-35y-12x+30y
=-2x-5y
1,5{2x-7y}-3{4x-10y} 2,{x-y}-[3x+{-x+y}] 去括号,合并同类项,
5(2x-7y)-3(4x-10y) 去括号,再合并同类项,
去括号 5(2x-7y)-3(4x-10y)
去括号并合并同类项(1)3x-2(x+7)+2(2x+5) (2)(4x-3y)-[-(3y-x)+(x-y)]-5x
整体去括号;化简[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)
整体去括号;[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)化简
(2x-3y)-(5x-y)去括号
(2x+3y)-(5x-y)去括号
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2
5X^3Y(X-Y)-10X^4Y^3(Y-X)^2因式分解
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
先去括号,再合并同类项:5(2x-7y)-3(4x-10y)
去括号(4x-3y)-[-(3-x)+(x-y)]-5x 还是去括号4xy²-3x²y-{3x²+xy²-[2xy²-4x²y+(x²y-2xy²)]}
3x-2y-[-4x+(x+3y)]+y 去括号然后合并同类项,
3x-【(y-x)-2x-y】 去括号,
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)
x为正数,y为负数,去绝对值号,/x-y+1/-2/y-x-3/+/y-x/+5