There are 14 people on the city bus. At first stop, 4 people get off and 2 get on. At the second stop, 6 people get off. If there are 12 people on the bus after second stop, how many got on there?

6

Step-by-step explanation:

14-4=10+2=12-6=6+6=12

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.