Question

1 si 2 va rogg frumoss

Answer 1

Explicație pas cu pas:

1.

${(4x + 4)}^{2} - (4x - 1)(16x + 4) + (2x + 1)^{2} = 16(x + 1)^{2} - 4(4x - 1)(4x + 1) + (2x + 1)^{2} = 16 {x}^{2} + 32x + 16 - 64 {x}^{2} + 4 + 4 {x}^{2} + 4x + 1 = - 44 {x}^{2} + 36x + 21$

2.

${(x + 1)}^{2} - {x}^{2} + x + 1 + {(5x - 3)}^{2} = {x}^{2} + 2x + 1 - {x}^{2} + x + 1 + 25 {x}^{2} - 30x + 9 = 25 {x}^{2} - 27x + 11$