计算:①(a+b)2(a2-2ab+b2) ②(x+5)2-(x-2)(x-3) ③10022
题型:解答题难度:一般来源:不详
计算: ①(a+b)2(a2-2ab+b2) ②(x+5)2-(x-2)(x-3) ③10022 |
答案
①(a+b)2(a2-2ab+b2), =(a+b)2(a-b)2, =(a2-b2)2, =a4-2a2b2+b4;
②(x+5)2-(x-2)(x-3), =(x2+10x+25)-(x2-5x+6), =15x+19;
③10022, =(1000+2)2, =10002+2×1000×2+22, =1004004. |
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