" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(2√3-3√2)(√2+√3) - (4-√6)=
= (√12-√18)(√2+√3) - (4-√6)=
= √24 + √36 - √36 - √54 - 4 +√6 =
= √24 - √54 - 4 + √6 =
= 2√6 - 3√6 - 4 + √6 =
= -√6 - 4 + √6 = -4
b)
(√5+2√3)(2√5-√3) + (6-3√15) =
= (√5 + √12)(√20-√3) + (6-3√15)=
= √100 - √15 + √240 -√36 + 6 - 3√15 =
= 10 - √15 + 4√15 - 6 + 6 - 3√15 =
= 10 + 3√15 - 3√15 = 10