For numbers 11-13, find the sum of the roots of the following quadratic equations.
11. x² - 7x + 2 = 0
a. 2
b. -7
d. 7
c. 1
12. 8x² = x - 3
a. 8
b.
[tex] \frac{1}{8} [/tex]
c. -8
d. -
[tex] \frac{1}{8} [/tex]
13. x²= 5
a. -5
b.
[tex] \frac{1}{5} [/tex]
c.-
[tex] \frac{1}{5} [/tex]
d. 0​