Question

daca n=(√2+√3)²-(√2-√3)² atunci n² este  a)95      b)96                c)100

Answer 1

Poti face si asa: n = (2√2)(2√3) = 4$\sqrt{6}$ => n²  = 16*6 = 96 ( am aplicat formula diferentei de patrate);
raspuns corect: b)96 

Bafta!

Answer 2

Poti face si asa: n = (2√2)(2√3) = 4$\sqrt{6}$ => n²  = 16*6 = 96 ( am aplicat formula diferentei de patrate);
raspuns corect: b)96 

Bafta!

Answer 3

n=(√2+√3)²-(√2-√3)²= 2+ 2√6+ 3 - 2 +  2√6 - 3 =4√6=>n²=(4√6)²=16x6=96 .Raspuns corect b.