数学去括号化简,(1)8x-(-3x-5)(2)1-(x-2y^2)+(-x+y^2)(3)(4y+3)-(5y-2)(4)(2x-3y)-(5x-y)(5)-(xy-2z)+(-xy+3z)(6)-(x^2+y-4y^2)

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数学去括号化简,(1)8x-(-3x-5)(2)1-(x-2y^2)+(-x+y^2)(3)(4y+3)-(5y-2)(4)(2x-3y)-(5x-y)(5)-(xy-2z)+(-xy+3z)(6)-

数学去括号化简,(1)8x-(-3x-5)(2)1-(x-2y^2)+(-x+y^2)(3)(4y+3)-(5y-2)(4)(2x-3y)-(5x-y)(5)-(xy-2z)+(-xy+3z)(6)-(x^2+y-4y^2)
数学去括号化简,
(1)8x-(-3x-5)
(2)1-(x-2y^2)+(-x+y^2)
(3)(4y+3)-(5y-2)
(4)(2x-3y)-(5x-y)
(5)-(xy-2z)+(-xy+3z)
(6)-(x^2+y-4y^2)

数学去括号化简,(1)8x-(-3x-5)(2)1-(x-2y^2)+(-x+y^2)(3)(4y+3)-(5y-2)(4)(2x-3y)-(5x-y)(5)-(xy-2z)+(-xy+3z)(6)-(x^2+y-4y^2)
(1)8x-(-3x-5) = 8x+3x+5=11x+5
(2)1-(x-2y^2)+(-x+y^2)= 1-x+2y^2-x-y^2 = 1-2x+y^2
(3)(4y+3)-(5y-2)= 4y+3-5y+2=5-y
(4)(2x-3y)-(5x-y)=2x-3y-5x+y= -3x-2y
(5)-(xy-2z)+(-xy+3z) = -xy-+2z-xy+3z = -2xy+5z
(6)-(x^2+y-4y^2) = -x^2 - y +4y^2
不理解就追问,理解了请采纳!

括号前是+号,去括号里面的符号不变;括号前是-号,去括号里面的符号相反

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