Question

please anyone help me to solve these questions in step by step​

Answer 1

Answer:

1) k < 4

2) |a| > 2

3) x = - 2/3 and x = - 2/3

4) b^2 / 4a

5) a = + - 1

7) 3

8) 16

11) - 2 < b < 2

12) 3

Sorry for the remaining parts...