Question

identify which of the following equations are quadratic and which are not.
1. 3 (c²+5) =0
2. (2x+7) (2x-7) =0
3. 4s (s-3) =2
4. (wt4) (w+7) =0
5. 6 (x-3) =2
6. 4b-2 =4b
7. (y+5) (y+5) =-8
8. (2c-3) (2c-3) =0
9. (8-3x) (8+3x) =4
10. 3(2t-7) =3t
11. 3c (c+6) =0
12. 10x-7 =-14
13. (3d-4) (3d+4) =0
14. (7+2x) (7-2x) =-15
15. (3-6b)²​

Answer 1

Answer:

1,2,3,7,8,9,11,13,14,15 are quadratic equations