Respuesta:
[tex] {(y + 7)}^{2} = {(y)}^{2} + 2(y)(7) + {(7)}^{2} = {y}^{2} + 14y + 49 \\ \\ \\ \\ {(y + 8)}^{2} = {(y)}^{2} + 2(y)(8) + {(8)}^{2} = {y}^{2} + 16y + 64 \\ \\ \\ \\ {(z + 10)}^{2} = {(z)}^{2} + 2(z)(10) + {(10)}^{2} = {z}^{2} + 20z + 100[/tex]
