Question

Va rog mult sa ma ajuți!!! ​

Answer 1

$(x + 2) {}^{2} = {x}^{2} + 2 \times 2 \times x + {2}^{2} = \\ = {x}^{2} + 4x + 4$

$(x - 2)(x + 2) = {x}^{2} - {2}^{2} = \\ = {x}^{2} - 4$

E(x)=

$( {x}^{2} + 4x + 4 )+ ( {x}^{2} - 4 )= \\ = {x}^{2} + 4x + 4 + {x}^{2} - 4 = \\ = 2 {x}^{2} - 4x=2x (x - 2)$

DACA x= 2

E(2) = 2 x 2 x (2-2) = 4 x 0 = 0

…ᘛ⁐̤ᕐᐷ…ᘛ⁐̤ᕐᐷฅ^•ﻌ•^ฅ