Question

1. aratati ca x=√mare 9+4√mic 2+√mare (3-√mic 2)²-√mare 3-2√mic 2 natural=?
ajutatima va rog.
dau puncte si corone

Answer 1

X=√(8+4√2+1)+|3-√2|-√(2-2√2+1)= √(2√2+1) la patrat+3-√2-√(√2-1) la patrat=|2√2+1|+3-√2-|√2-1|=2√2+1+3-√2-√2+1=> x=5 => x nr natural