F(X)= $\sqrt{X+3}$
4ab+12+3ab-15+ab
16969.x 1/12
F(X)= $\sqrt{X-3}$
249×2.1
F(X)= $\sqrt{X-2}$
P(X): (X-2)
349×2.1
F(X)= $\sqrt{X-4}$
7b/3-a - 2b/3-a
