Explicație pas cu pas:
1.
[tex]{(4x + 4)}^{2} - (4x - 1)(16x + 4) + (2x + 1)^{2} = 16(x + 1)^{2} - 4(4x - 1)(4x + 1) + (2x + 1)^{2} = 16 {x}^{2} + 32x + 16 - 64 {x}^{2} + 4 + 4 {x}^{2} + 4x + 1 = - 44 {x}^{2} + 36x + 21[/tex]
2.
[tex] {(x + 1)}^{2} - {x}^{2} + x + 1 + {(5x - 3)}^{2} = {x}^{2} + 2x + 1 - {x}^{2} + x + 1 + 25 {x}^{2} - 30x + 9 = 25 {x}^{2} - 27x + 11[/tex]
