Amperes (abbreviated amp) measure the strength of electric current. An ohm is the unit of electrical resistance. In an electric
circuit, the current varies inversely as the resistance. If the
current is 24 amps when the resistance is 20 ohms, find
the resistance in ohms when the current is 40 amps.

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.

kaahe btau