Answer:
Step-by-step explanation:
The quadratic formula is
[tex]x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}[/tex]
For us, a = 1, b = -7, and c = 12. Filling in the formula then looks like this:
[tex]x=\frac{7+/-\sqrt{(-7)^2-4(1)(12)} }{2(1)}[/tex] which simplifies to
[tex]x=\frac{7+/-\sqrt{49-48} }{2}[/tex] and
[tex]x=\frac{7+/-\sqrt{1} }{2}[/tex] and
[tex]x=\frac{7+1}{2}=\frac{8}{2}=4[/tex] or
[tex]x=\frac{7-1}{2}=\frac{6}{2}=3[/tex]
Th 22 solutions are x = 3 and x = 4.
