Question

Спростiть вираз (√7+√5)²-12

Answer 1

(√7)^2 + 2√7*√5 + (√5)^2 - 12 = 
= 7 + 2√35 + 5 - 12 = 
= 12 + 2√35 - 12 = 
= 2√35