[tex](x + 2) {}^{2} = {x}^{2} + 2 \times 2 \times x + {2}^{2} = \\ = {x}^{2} + 4x + 4[/tex]
[tex](x - 2)(x + 2) = {x}^{2} - {2}^{2} = \\ = {x}^{2} - 4 [/tex]
E(x)=
[tex]( {x}^{2} + 4x + 4 )+ ( {x}^{2} - 4 )= \\ = {x}^{2} + 4x + 4 + {x}^{2} - 4 = \\ = 2 {x}^{2} - 4x=2x (x - 2) [/tex]
DACA x= 2
E(2) = 2 x 2 x (2-2) = 4 x 0 = 0
…ᘛ⁐̤ᕐᐷ…ᘛ⁐̤ᕐᐷฅ^•ﻌ•^ฅ
