Question

X^2 - 7x - 18 = ?
Medal will be given, help?

Answer 1

\[x^{2}-7x-18=0\]\[(x-9)(x+2)=0\]

Case 1:
\[x-9=0\]\[x=9\] Case 2:\[x+2=0\]\[x=-2\]

Answer 2

You can check with a plot.

Answer 3

Thank you so much! :)