Question

giúp mk nha

Answer 1

a: P<1/2

=>P-1/2<0

=>\(\dfrac{2\left(\sqrt{x}-1\right)-\sqrt{x}-1}{2\left(\sqrt{x}+1\right)}< 0\)

=>căn x-3<0

=>0<=x<9

c: căn x-1<căn x+1

=>P<1