( 1/2√3+√8)(√8- 1/2√3)
=8-3/4
=29/4
②:
(√3- 1)? -(2√3)?
=3-2√3+ 1- 12
=-2√3-8
③:
(√ 12-2√ 18)?
= 12-24√6+72
=84-24√6
④:
√48÷√3-√ 1/2×√ 12+√24
=4-√6+2√6
=4+√6
⑤:
√5+ 1/√5-√4/5
=√5+√5/5-2√5/5
=4√5/5
Please ask questions if you don't understand. I wish you a happy study!
Data 1: the story of flowers
Hua loved to play and join in the fun since he was a child, but his lessons were mediocre and sometimes he failed.