Question

rezolvati in R 3(radical din2-1)•×=6

Answer 1

3(√2-1)·x=6
x(√2-1)=6/3
x(√2-1)=2
x=2/(√2-1)
x=[2·(√2+1)]/[(√2-1)(√2+1)]
x=[2(√2+1)]/[(√2)²-1²]
x=[2(√2+1)]/(2-1)
x=2√2+2 apartine R

S={2√2+2}