Question

(√3+1)²-(√3-1)² pls am nevoie urgent

Answer 1

vom folosi formula a² - b² = (a -b)(a +b)

(√3+1)²-(√3-1)² = (√3 + 1 - √3 + 1) ( √3 + 1 + √3 - 1) = 2 × 2√3 = 4√3 

(√3+1)²-(√3-1)² = 3 + 2√3 + 1 - 3 + 2√3 - 1 = 4√3