Question

(1|√ 7-√ 6)-(3|√ 6-√ 3)-(4|√ 7+√ 3)

Answer 1

(√7+√6)/(√7-√6)(√7+√6) -3(√6+√3)/(√6-√3)(√6+√3) -4(√7-√3)/(√7+√3)(√7-√3)=
=(√7+√6)/1 -3(√6+√3)/3-4(√7-√3)/4=√7+√6-√6-√3-√7+√3=0

Answer 2

Спасибо!