Question

a=(√3+√5)•(3-√15)+(1-√3)la puterea a2 a+4√3 este natural. Pls ajutor

Answer 1

(√3+√5)∙(3-√15)+(1-√3)²+4√3=3√3-√45+3√5-√75+1-2√3+3+4√3=3√3-3√5+3√5-5√3+1-2√3+3+4√3=7√3-7√3+4=4