Решим примеры:
д) $$ (2\sqrt{3}-7)^2 = (2\sqrt{3})^2 - 2 \cdot 2\sqrt{3} \cdot 7 + 7^2 = 4 \cdot 3 - 28\sqrt{3} + 49 = 12 - 28\sqrt{3} + 49 = 61 - 28\sqrt{3} $$
е) $$(2\sqrt{10} - \sqrt{2})^2 = (2\sqrt{10})^2 - 2 \cdot 2\sqrt{10} \cdot \sqrt{2} + (\sqrt{2})^2 = 4 \cdot 10 - 4\sqrt{20} + 2 = 40 - 4\sqrt{4 \cdot 5} + 2 = 40 - 4 \cdot 2\sqrt{5} + 2 = 42 - 8\sqrt{5}$$
Ответ:
д) $$61 - 28\sqrt{3} $$
е) $$42 - 8\sqrt{5}$$