What is the least common multiple of 10, 20, and 14?

140

Step-by-step explanation:

The multiples of 10 are : 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, ...

The multiples of 20 are : 20, 40, 60, 80, 100, 120, 140,

The multiples of 14 are : 14, 28, 42, 56, 70, 84, 98, 112, 126, 140,

The least common multiple of 10, 20 and 14 is 140

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3