Can someone help pls

a = x (1)
b = -2
c = 9
[tex] = {b}^{2} - 4ac[/tex]
[tex] = {( - 2)}^{2} - 4 \times 1 \times 9[/tex]
[tex] = 4 - 4 \times 1 \times 9[/tex]
[tex] = 4 - 36[/tex]
[tex] = - 32[/tex]