Thanks!Hope this helps !:)
We will solve it by middle term splitting.
So the zeroes of qiven polynomial are
-6 and -3
Hope it will help u
a is the coefficient of X square, b is the coefficient of X and c is the constant term.
amount of tax paid: 120÷100×6.5= 7.8$
additional booking charges: 20$
original ticket cost: 120-7.8-20=92.2$