九上数学计算题 √8a³-2a²√1/8a+3√2a³ (√6-√3/2﹚-﹙√24+2√2/3﹚咋写
问题描述:
九上数学计算题 √8a³-2a²√1/8a+3√2a³ (√6-√3/2﹚-﹙√24+2√2/3﹚咋写
(1)√8a³-2a²√1/8a+3√2a³
(2 )(√6-√3/2﹚-﹙√24+2√2/3﹚
答
√8a³-2a²√1/8a+3√2a³
=2a√2a-1/2√2a+3a√2a
=9/2a√2a
(√6-√3/2﹚-﹙√24+2√2/3﹚
=√6-1/2√6-2√6-2/3√6
=(1-1/2-2-2/3)√6
=-13/6√6