(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4
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![(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4](/uploads/image/z/10257309-45-9.jpg?t=%281%29.+%28a%2Bb%29-%28a%2Bb%29%5E2+%282%29.%28y-x%29%5E2-2%28x-y%29+%283%29.2m%28a-3%29%281%29.+%28a%2Bb%29-%28a%2Bb%29%5E2%282%29.%28y-x%29%5E2-2%28x-y%29%283%29.2m%28a-3%29%2B4%283-a%29%284%29.4%28y-x%29%5E3-2%28x-y%29%5E2%285%29.%28a%2Bb%29%5E2%2B2%28b%2Ba%29%286%29.%28a-b%29%5E3-%28b-a%29%5E4)
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(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4
(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)
(1). (a+b)-(a+b)^2
(2).(y-x)^2-2(x-y)
(3).2m(a-3)+4(3-a)
(4).4(y-x)^3-2(x-y)^2
(5).(a+b)^2+2(b+a)
(6).(a-b)^3-(b-a)^4
(1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4