因数分解みたいなんだが...頼む。(式も)

1: X^2 + 4x - 12 =0
2: 9x^2 - 23 =0
3:3x^2 + x = 2x - 6
4:7k^2 + 10k - 100 = 2k^2 + 55
5:0.01p^2 - 0.22p + 2.9 =0
6:y = x^2 - 6x + 11
7:y = x^2 + 26x + 68
8:y = -x^2 + 20x - 80
9:y = -2x^2 - 2x - 7

多いけどお願いします