Answer:
[tex]1.(6 {x}^{2} + 7 {)}^{2} \\ (6 {x}^{2} {)}^{2} + 2 \times 6 {x}^{2} \times 7m + (7m {)}^{2} \\ = 36 {x}^{4} + 84mx {}^{2} + 49 {m}^{2} [/tex]
[tex]2.(2d - 3 {)}^{2} \\ (2d {)}^{2} - 2 \times 2d \times 3 + {3}^{2} \\ = 4 {d}^{2} - 12d + 9[/tex]
