计算 (-2ab)^2+(a^2-2b)^2-(a^2+b^2)(a^2-b^2) (3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13),其中x=3又1/2

计算 (-2ab)^2+(a^2-2b)^2-(a^2+b^2)(a^2-b^2) (3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13),其中x=3又1/2
计算 (-2ab)^2+(a^2-2b)^2-(a^2+b^2)(a^2-b^2) (3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13),其中x=3又1/2

计算 (-2ab)^2+(a^2-2b)^2-(a^2+b^2)(a^2-b^2) (3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13),其中x=3又1/2
(-2ab)^2+(a^2-2b)^2-(a^2+b^2)(a^2-b^2)
=4a²b²+a^4-4a²b+4b²-a^4+b^4
=4a²b²-4a²b+4b²+b^4
(3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13) ,其中x=3又1/2
(3x-2)(x-3)-2(x-5)(x+6)-(x^2-7x+13)
=3x²-11x+6-2x²-2x+60-x²+7x-13
=-6x+53
=-6×7/2+53
=-21+53
=32