计算与化简:(-2x^2y^3)^2(xy)^3①(-2x^2y^3)^2(xy)^3 ②(2x-3y)^2-(y+3x)(3x-y)③-2a^2(1/2ab+b^2)-5a(a^2b-ab^2) ④9(x+2)(x-2)-(3x-2)^2⑤(a+b-c)(a-b+c) ⑥(1)先化简再求值:(2x-1)^2-(3x+1)(3x-1)+5x(x-1),其中x=-1/3(2)先
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![计算与化简:(-2x^2y^3)^2(xy)^3①(-2x^2y^3)^2(xy)^3 ②(2x-3y)^2-(y+3x)(3x-y)③-2a^2(1/2ab+b^2)-5a(a^2b-ab^2) ④9(x+2)(x-2)-(3x-2)^2⑤(a+b-c)(a-b+c) ⑥(1)先化简再求值:(2x-1)^2-(3x+1)(3x-1)+5x(x-1),其中x=-1/3(2)先](/uploads/image/z/1988777-65-7.jpg?t=%E8%AE%A1%E7%AE%97%E4%B8%8E%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%88-2x%5E2y%5E3%EF%BC%89%5E2%28xy%29%5E3%E2%91%A0%EF%BC%88-2x%5E2y%5E3%EF%BC%89%5E2%28xy%29%5E3+%E2%91%A1%282x-3y%29%5E2-%28y%2B3x%29%283x-y%29%E2%91%A2-2a%5E2%281%2F2ab%2Bb%5E2%29-5a%28a%5E2b-ab%5E2%29+%E2%91%A39%28x%2B2%29%28x-2%29-%283x-2%29%5E2%E2%91%A4%28a%2Bb-c%29%28a-b%2Bc%29+%E2%91%A5%EF%BC%881%EF%BC%89%E5%85%88%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%80%BC%EF%BC%9A%282x-1%29%5E2-%283x%2B1%29%283x-1%29%2B5x%28x-1%29%2C%E5%85%B6%E4%B8%ADx%3D-1%2F3%EF%BC%882%EF%BC%89%E5%85%88)
计算与化简:(-2x^2y^3)^2(xy)^3①(-2x^2y^3)^2(xy)^3 ②(2x-3y)^2-(y+3x)(3x-y)③-2a^2(1/2ab+b^2)-5a(a^2b-ab^2) ④9(x+2)(x-2)-(3x-2)^2⑤(a+b-c)(a-b+c) ⑥(1)先化简再求值:(2x-1)^2-(3x+1)(3x-1)+5x(x-1),其中x=-1/3(2)先
计算与化简:(-2x^2y^3)^2(xy)^3
①(-2x^2y^3)^2(xy)^3 ②(2x-3y)^2-(y+3x)(3x-y)
③-2a^2(1/2ab+b^2)-5a(a^2b-ab^2) ④9(x+2)(x-2)-(3x-2)^2
⑤(a+b-c)(a-b+c)
⑥(1)先化简再求值:(2x-1)^2-(3x+1)(3x-1)+5x(x-1),其中x=-1/3
(2)先化简再求值:(x+2y)(x-2y)-(2x-y)(-2x-y),其中x=8,y=-8
上面题目不要了!
⑦(x-2)+x^(2-x) ⑧(x^2+y^2)^2-4x^2y^2
⑨-8a^3b^2+12ab^3c-6a^2b ⑩3a(x-y)+9(y-x)
⑾(2m-3n)^2-(2m-3n) ⑿16mn^4-m
12题了.前面的会了.今天内追加.
计算与化简:(-2x^2y^3)^2(xy)^3①(-2x^2y^3)^2(xy)^3 ②(2x-3y)^2-(y+3x)(3x-y)③-2a^2(1/2ab+b^2)-5a(a^2b-ab^2) ④9(x+2)(x-2)-(3x-2)^2⑤(a+b-c)(a-b+c) ⑥(1)先化简再求值:(2x-1)^2-(3x+1)(3x-1)+5x(x-1),其中x=-1/3(2)先
①4x^7y^9
②-5x^2+9y^2-12xy
③-6a^3b+3a^2b^2
④12x-4
⑤a^2-b^2-c^2+2bc
其他明天再帮你.