5ab^2-{2a^b-[3ab^2-(4ab^2-2a^2b)]}

有爱的地方就是家2022-10-04 11:39:541条回答

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随缘乐乐共回答了7个问题 | 采纳率100%: 原式=5ab²-{2a²b-[3ab²-(4ab²-2a²b)]}
=5ab²-[2a²b-(3ab²-4ab²+2a²b)]
=5ab²-(2a²b-3ab²+4ab²-2a²b)
=5ab²-2a²b+3ab²-4ab²+2a²b
=(5ab²+3ab²-4ab²)+(-2a²b+2a²b)
=4ab²; 1年前

(1) -(3xy^3)^5-(-3x)^2×(-y)^6×(xy^3)^3= (2)2ab(5ab^2 +3a^2b) (1) -(3xy^3)^5-(-3x)^2×(-y)^6×(xy^3)^3= (2)2ab(5ab^2 +3a^2b)= (3)(-3x^2 y)×(-x^4)×(-y^3)= (4)[3^2×(a^2)^3]^2= glassman851年前1: graceberyl 共回答了13个问题 | 采纳率100%

(1) -(3xy^3)^5-(-3x)^2×(-y)^6×(xy^3)^3= -3^5x^5y^15-9x^2y^6x^3y^9=-243x^5y^15-9x^5y^15=-252x^5y^15
(2)2ab(5ab^2 +3a^2b)= 2abx5ab^2 +2abx3a^2b=2x5a^(1+1)b^(1+2)+2x3a^(1+2)b^(1+1)=10a^2b^3+6a^3b^2
(3)(-3x^2 y)×(-x^4)×(-y^3)=-3*(-1)*(-1)x^(2+4)y^(1+3)=-3x^6y^4
(4)[3^2×(a^2)^3]^2=[6×a^2x3]^2=36a^6x2=36a^12

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2ab(5ab^2+3a^2b) 2ab(5ab^2+3a^2b) 急要 stskl1年前1: 伤心愉快的宇共回答了14个问题 | 采纳率92.9%

2ab(5ab^2+3a^2b)
=10a^2b^3+6a^3b^2

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2xy^2*(3xy-1/2x^2)= 2ab*5ab^2*3a^2b= 3k(2k-5)+2k(1-3k)=52 k= 2xy^2*(3xy-1/2x^2)= 2ab*5ab^2*3a^2b= 3k(2k-5)+2k(1-3k)=52 k=?(-5/2xy)*(2/3xy^2-2xy+4/3y) xiaowjing1年前3: 爱尔兰的冰咖啡共回答了15个问题 | 采纳率93.3%

2xy^2*(3xy-1/2x^2)= 6x²y³-x³y²
2ab*5ab^2*3a^2b= 30a^4b^8
3k(2k-5)+2k(1-3k)=52 k=?
6k²-15k+2k-6k²=52
-13k=52
k=-4
(-5/2xy)*(2/3xy^2-2xy+4/3y)
=-5/3x²y³+5x²y²-10/3xy²

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