Question

How do you do this?

Answer 1

Explanation:

7. x^2 - 4x

a= 1

b= -4

c= 0

8. 2x^2 -3x +1

a= 2

b= -3

c= 1

9. 9x^2 - 4

a= 9

b= 0

c= -4

10. x^2 +12x +36

a= 1

b= 12

c= 36

11. x^2 -9x + 9

a= 1

b= -9

c= +9

12. - (x^2 + 10x + 25)

= -x^2 -10x - 25

a= -1

b= -10

c= -25