а, в=аq; c=aq²
а²+в²+с²=(а²+а²q²)*(а²q²+a²q⁴)=а⁴q²*(1+q²)²
(ав+вс)²=(а²q+а²q³)²=а⁴q²+2а⁴q⁴+а⁴q⁶=а⁴q²(1+2q²+q⁴)=а⁴q²*(1+q²)²
а, в=аq; c=aq²
а²+в²+с²=(а²+а²q²)*(а²q²+a²q⁴)=а⁴q²*(1+q²)²
(ав+вс)²=(а²q+а²q³)²=а⁴q²+2а⁴q⁴+а⁴q⁶=а⁴q²(1+2q²+q⁴)=а⁴q²*(1+q²)²