Question

If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3 is equal to :
A) 22
B) 23
C) 24
D) 25

Answer 1

Do find the required answer in the attachment.

Answer 2

Answer:

If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3 is equal to option A

Step-by-step explanation:

• The question is of the operation on numbers.

Given operation:

a * b = 2a - 3b + ab

To find:

3 * 5 + 5 * 3

Step 1 of 1:

• value of 3 * 5 is given as

        $3*5=2(3)-3(5)+3\times 5\\3*5=6-15+15\\3*5=6$

• value of 5 * 3 is given as

      $5 * 3=2(5)-3(3)+5\times3\\ 5 * 3=10-9+15\\ 5 * 3=16$

• The value of 3 * 5 + 5 * 3=16+6=22

Conclusion:

If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3 is 22