4(4)+15y=38
4(3)+15y=38
4(2)+15y=38
4(1)+15y=38
4(0)+15y=38
√2/2 + √2/2
128+36/71,-206^x
$\sqrt{\Box}$ 2 $\frac{\Box}{\Box}$ 2 + $\sqrt{\Box}$ 2 $\frac{\Box}{\Box}$ 2
