1/2 x 2/8
5x-3(3-$\frac{1}{4}$x)= $\frac{7}{2}$x-3
x^4-8x^2\cdot \:z+4\cdot \:z^2
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)
