Zgjidh {l}{4ab+4b=b(a^2-4a+4)=b(a-2)^2}{2)^2}

$$\left. \begin{array} { l } { 4 a b + 4 b = b ( a ^ { 2 } - 4 a + 4 ) = b ( a - 2 ) ^ { 2 } } \\ { 2 ) ^ { 2 } } \end{array} \right.$$

Gjej a, b (complex solution)

$$a=0\text{, }b\in \mathrm{C}$$

$$a=8\text{, }b\in \mathrm{C}$$

$$a\in \mathrm{C}\text{, }b=0$$

Gjej a, b

$$a=0\text{, }b\in \mathrm{R}$$

$$a=8\text{, }b\in \mathrm{R}$$

$$a\in \mathrm{R}\text{, }b=0$$