计算:3ab×(-2ab∧3); (-1/3)∧101×3∧100; (-2x+3)(2x+3); (a+1)∧2-(a-1)(a+1)
问题描述:
计算:3ab×(-2ab∧3); (-1/3)∧101×3∧100; (-2x+3)(2x+3); (a+1)∧2-(a-1)(a+1)
答
3ab×(-2ab∧3);
=-6a^2b^4
(-1/3)∧101×3∧100;
=(-1/3×3)^100×(-1/3)
=(-1)^100×(-1/3)
=-1/3
(-2x+3)(2x+3);
=3²-(2x)²
=9-4x²
(a+1)∧2-(a-1)(a+1)
=a²+2a+1-(a²-1)
=a²+2a+1-a²+1
=2a+2