Write the quadratic equation whose roots are
−1
and
2
, and whose leading coefficient is
1
.
(use the letter
x
to represent the variable.)

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.