Question

Calculati folosind formulele de calcul prescurtat:
(√2+√3)^2 + (1-√6)^2. Va roggg ajutor!

Answer 1

(a+b)²=a²+2ab+b², (a-b)²=a²-2ab+b²

2+2√6+3+1-2√6+6=12

Answer 2

(√2+√3)²+(1-√6)²=√2²+2•√2•√3+√3²+1²-2•1•√6+√6²=2+2•√6+3+1-2√6+6=2+3+1+6+2√6-2√6=5+1+6+0=6+6=12