A model rocket is launched with an initial upward velocity of 35/ms. The rocket's height h (in meters) after t seconds is given by the following. =h−35t5t2
Find all values of t for which the rocket's height is 12 meters.
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)

ground
h

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.

i need more details sorry

step-by-step explanation: