3) evaluate the expressions if a = 6 and b = 4
$b^2$=
$2a$=
$3ab$=

Question

Accepted Answer

### For $ b^2 $:
# Explanation:
## Step1: Substitute $ b = 4 $
$ b^2 = 4^2 $
## Step2: Calculate $ 4^2 $
$ 4^2 = 4\times4 = 16 $
# Answer:
$ 16 $

### For $ 2a $:
# Explanation:
## Step1: Substitute $ a = 6 $
$ 2a = 2\times6 $
## Step2: Calculate $ 2\times6 $
$ 2\times6 = 12 $
# Answer:
$ 12 $

### For $ 3ab $:
# Explanation:
## Step1: Substitute $ a = 6 $, $ b = 4 $
$ 3ab = 3\times6\times4 $
## Step2: Calculate $ 3\times6\times4 $
First, $ 3\times6 = 18 $, then $ 18\times4 = 72 $
# Answer:
$ 72 $

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QUESTION IMAGE

Question

Explanation:

For \( b^2 \):

Step1: Substitute \( b = 4 \)

Step2: Calculate \( 4^2 \)

Step1: Substitute \( a = 6 \)

Step2: Calculate \( 2\times6 \)

Step1: Substitute \( a = 6 \), \( b = 4 \)

Step2: Calculate \( 3\times6\times4 \)

Answer:

For \( 2a \):