Find the product of the following pair of monomials: 4p³, 3p.

The given monomials are 4p³,3p. 

The multiplication happens separately for constants and variables as shown below:
 

=(4p³) × (3p) = (4 × 3) × (p³ × p).
 

We know the multiplication of variables with indices works for the same base with the formula of 

(x^a × x^b) = x ^a+b.
 

We take the constants’ multiplication first and get (4×3)=12 and the multiplication of the variables gives us 

(p³×p) = (p³ × p¹) = p⁴.
 

So, the multiplication value is (4p³) × (3p) = 12p⁴.