3. What is the lowest common multiple (LCM) of 3 and 7?
Remember multiples always start with the number itself.
Example: Multiples of 4:4, 8, 12, 16, 20...
I

3= 3,6,9,12,15,18,21,24,27,30,33

7=7,14,21,28,

the least common multiple is 21

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.

step-by-step explanation: