\(\dfrac{2+\sqrt{19-2x}}{x}=1\)

\(\sqrt{-x^2+4x}+2=2x\)

\(\sqrt{x^2-2x+1}=\sqrt{6+4\sqrt{2}}-\sqrt{6-4\sqrt{2}}\)

\(\sqrt{4x^2+5x+1}-2\sqrt{x^2-x+1}=9x-3\)

\(\sqrt{2x^2-1}+\sqrt{x^2-3x-2}=\sqrt{2x^2+2x+3}+\sqrt{x^2-x+2}\)

You should have given (explain)_______ for your absence at the metting

If you had arrived at the sale early, you.........................a better selection

A:would have found

B:found

C:had found

D:would find

I don't know what to do. If my mother..................here now, she would help me.

A:is

B:be

C:will be

D:were