计算(1)20100-32+|-4|+(12)-1 (2)(y2)4-y-(-2y)3-y6(3)(x+y-3)(x-y+3)(用乘法公式) (
题型:解答题难度:一般来源:不详
计算 (1)20100-32+|-4|+()-1 (2)(y2)4-y-(-2y)3-y6 (3)(x+y-3)(x-y+3)(用乘法公式) (4)(4x+1)(-4x-1)-(2x-3)(2x+3) |
答案
(1)原式=1-9+4+2 =-2;
(2)原式=y9+8y9 =9y9;
(3)原式=x2-(y-3)2 =x2-y2+6y-9;
(4)原式=-(4x+1)2-(4x2-9) =-16x2-8x-1-4x2+9 =-20x2-8x+8. |
举一反三
计算 (1)(-)12÷(-)9 (2)()-2-(-1999)0÷(-)2 (3)a4-a4+(a2)4-(-3a4)2 (4)(-8)2009×0.1252010. |
计算或化简求值: (1)(-)-1+(-2)3×(π-2)0 (2)(2a2)2-a7÷(-a)3 (3)(x-1)2-x(x+1) |
计算: (1)(2x)3×(-3xy2) (2)(a+3b)(a-2b)-(2a-b)2 (3)(22000-21999)0-(-)-2+(-0.125)9×810. |
计算 (1)()0-2-1 (2)(a2)3-2a7÷a. |
最新试题
热门考点