Помогите!!!!!!! номер 3

Question

Помогите!!!!!!! номер 3

---

Answer 1

7^1/2(7^1/2 - 3^1/2)^2+(7^1/2 + 3^1/2)^2 =(7^1/2)^2-2*7^1/2*3^1/2+(3^1/2)^2+(7^1/2)^2+2*7^1/2*3^1/2+(3^1/2)^2=(7^1/2)^2+(3^1/2)^2+(7^1/2)^2+(3^1/2)^2=7+3+7+3=20
ОТВЕТ:20