Question

radical din x^2-3 (aici se termina rad)-x=-1

Answer 1

√(x²-3)-x=-1
√(x²-3)=-1+x
x²-3=(x-1)²
x²-3=x²-2x+1
x²-x²+2x=1+3
2x=4
x=4/2
x=2

Answer 2

$\sqrt{ x^{2} -3}-x=-1 \\ \sqrt{ x^{2} -3}=x-1;x \geq 1 \\ x^{2} -3= x^{2} -2x+1 \\ 2x=4 \\ x=2$