计算:-x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1) [x(x^4-y^4)-3xy(--x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)[x(x^4-y^4)-3xy(-y)^3·x^2·y
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![计算:-x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1) [x(x^4-y^4)-3xy(--x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)[x(x^4-y^4)-3xy(-y)^3·x^2·y](/uploads/image/z/759653-53-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A-x%28x%5E2%2B2x-3%29-x%5E2%28x%2B1%29%2B3x-1+2ab%283%2F2%C2%B7a%5En-1%2B1%2F2b%5En-1%29-3ab%282%2F3%C2%B7a%5En-1-b%5En-1%29+%5Bx%28x%5E4-y%5E4%29-3xy%EF%BC%88--x%28x%5E2%2B2x-3%29-x%5E2%28x%2B1%29%2B3x-1+2ab%283%2F2%C2%B7a%5En-1%2B1%2F2b%5En-1%29-3ab%282%2F3%C2%B7a%5En-1-b%5En-1%29%5Bx%28x%5E4-y%5E4%29-3xy%EF%BC%88-y%29%5E3%C2%B7x%5E2%C2%B7y)
计算:-x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1) [x(x^4-y^4)-3xy(--x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)[x(x^4-y^4)-3xy(-y)^3·x^2·y
计算:-x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1) [x(x^4-y^4)-3xy(-
-x(x^2+2x-3)-x^2(x+1)+3x-1
2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)
[x(x^4-y^4)-3xy(-y)^3·x^2·y
计算:-x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1) [x(x^4-y^4)-3xy(--x(x^2+2x-3)-x^2(x+1)+3x-1 2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)[x(x^4-y^4)-3xy(-y)^3·x^2·y
-x(x^2+2x-3)-x^2(x+1)+3x-1
=-x³-2x²+3x-x³-x²+3x-1
=-2x³-3x²+6x-1
2ab(3/2·a^n-1+1/2b^n-1)-3ab(2/3·a^n-1-b^n-1)
=3a^nb+ab^n-2a^nb+3ab^n
=a^nb+4ab^n
[x(x^4-y^4)-3xy(-y)^3·x^2·y
=x^5-xy^4+3x^3y^5