计算题(1)(3a2)3-(a4)2-(-a5)2-(a2)2(2)(p-q)6÷[(p-q)2(q-p)3](3)27×(-3)-2×34-81×(-3)-3
题型:解答题难度:一般来源:不详
计算题 (1)(3a2)3-(a4)2-(-a5)2-(a2)2 (2)(p-q)6÷[(p-q)2(q-p)3] (3)27×(-3)-2×34-81×(-3)-3×(-3)3 (4)(a+3)2(a-3)2 (5)(4x+1)(-4x-1)-(2x-3)(2x+3) (6)982-101×99 |
答案
(1)原式=27a6•a8-a10•a4=26a14;
(2)原式=(p-q)6÷(q-p)5=q-p;
(3)原式=27××81-81×(-)×(-27), =3×81-81, =162;
(4)原式=[(a+3)(a-3)]2, =(a2-9)2, =a4-18a2+81;
(5)原式=-(4x+1)2-(4x2-9), =-(16x2+8x+1)-(4x2-9), =-16x2-8x-1-4x2+9, =-20x2-8x+8;
(6)原式=(100-2)2-(100+1)×(100-1), =(100×100+4-4×100)-(100×100-1), =100×100+4-400-100×100+1, =4-4×100+1, =-395. |
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