tolong dijawab no. 5,6,7,8,12,14!!please pake cara!

5)
(x - 10)^2
= x^2 - 2x × 10 + 10^2
= x^2 - 20x + 100

6)
(3x + 4)^2
= (3x)^2 + 2 × 3x × 4 + 4^2
= 9x^2 + 24x + 16

7)
(5x - 7)^2
= (5x)^2 - 2 × 5x × 7 + 7^2
= 25x^2 - 70x + 49

8)
(-7x + 3)^2
= 9 - 42x + 49x^2
= 49x^2 - 42x + 9

12)
(7p^2 - 4p)^2
= (7p^2)^2 - 2 × 7p^2 × 4p + (4p)^2
= 49p^4 - 56p^3 + 16p^2

No. 14 lihat di gambar