2.Преобразуйте выражение в многочлен: 1.(n+6)2; 2. (13h+1)2; 3. (4-3y)²; 6.(9a+t)²; 7. (k-8)2; 11. (-3h+7)2; 12.(-10x-y)²; 4. (2k-8)2; 5. (3c+7d)²; 8. (5-7m)²; 9. (13p-3)2; 13.(c-10)²; 10.(2f-10a)2; 14. (11x+4)2; 15. (6+2y)²;

1. (n+6)²:

\[(n+6)^2 = n^2 + 2 \cdot n \cdot 6 + 6^2 = n^2 + 12n + 36\]

2. (13h+1)²:

\[(13h+1)^2 = (13h)^2 + 2 \cdot 13h \cdot 1 + 1^2 = 169h^2 + 26h + 1\]

3. (4-3y)²:

\[(4-3y)^2 = 4^2 - 2 \cdot 4 \cdot 3y + (3y)^2 = 16 - 24y + 9y^2\]

4. (2k-8)²:

\[(2k-8)^2 = (2k)^2 - 2 \cdot 2k \cdot 8 + 8^2 = 4k^2 - 32k + 64\]

5. (3c+7d)²:

\[(3c+7d)^2 = (3c)^2 + 2 \cdot 3c \cdot 7d + (7d)^2 = 9c^2 + 42cd + 49d^2\]

6. (9a+t)²:

\[(9a+t)^2 = (9a)^2 + 2 \cdot 9a \cdot t + t^2 = 81a^2 + 18at + t^2\]

7. (k-8)²:

\[(k-8)^2 = k^2 - 2 \cdot k \cdot 8 + 8^2 = k^2 - 16k + 64\]

8. (5-7m)²:

\[(5-7m)^2 = 5^2 - 2 \cdot 5 \cdot 7m + (7m)^2 = 25 - 70m + 49m^2\]

9. (13p-3)²:

\[(13p-3)^2 = (13p)^2 - 2 \cdot 13p \cdot 3 + 3^2 = 169p^2 - 78p + 9\]

10. (2f-10a)²:

\[(2f-10a)^2 = (2f)^2 - 2 \cdot 2f \cdot 10a + (10a)^2 = 4f^2 - 40af + 100a^2\]

11. (-3h+7)²:

\[(-3h+7)^2 = (-3h)^2 + 2 \cdot (-3h) \cdot 7 + 7^2 = 9h^2 - 42h + 49\]

12. (-10x-y)²:

\[(-10x-y)^2 = (-10x)^2 + 2 \cdot (-10x) \cdot (-y) + (-y)^2 = 100x^2 + 20xy + y^2\]

13. (c-10)²:

\[(c-10)^2 = c^2 - 2 \cdot c \cdot 10 + 10^2 = c^2 - 20c + 100\]

14. (11x+4)²:

\[(11x+4)^2 = (11x)^2 + 2 \cdot 11x \cdot 4 + 4^2 = 121x^2 + 88x + 16\]

15. (6+2y)²:

\[(6+2y)^2 = 6^2 + 2 \cdot 6 \cdot 2y + (2y)^2 = 36 + 24y + 4y^2\]