Question

simplify each sum or difference
23u²v - 19u²v
options:
-4u²v
4u²v
-4uv
4uv

Explanation:

Step1: Identify like terms

The expression has like terms $23u^2v$ and $-19u^2v$.

Step2: Subtract coefficients

Subtract the coefficients of the like terms:
$23u^2v - 19u^2v = (23 - 19)u^2v$

Step3: Calculate the coefficient difference

$23 - 19 = 4$, so the expression simplifies to $4u^2v$.

Answer:

$4u^2v$