C) 3 + + 3 - 18x + 4
Step-by-step explanation:
Using vertical multiplication method, we will multiply each number separately with another.
3 - 5x + 1
(×) + 2x + 4
3 - 5 + [ Multiplying with 3 - 5x + 1 each of them separately]
6 - 10 + 2x
+ 12 - 20x + 4
After adding and subtracting all the values, we get,
3 + + 3 - 18x + 4
Therefore, option C is the answer. In this way, we can do vertical multiplication method.