Question

I will mark branilest If a x b = 2a - 3b + ab, then 3 x 5 + 5 x 3 is equal to?

A. 20
B. 22
C. 24
D. 26

Answer 1

B. 22

Explanation:

Given

• a x b = 2a - 3b + ab

3 x 5

• 2(3) - 3(5) + 3(5)
• 6

5 x 3

• 2(5) - 3(3) + 3(5)
• 1 + 15
• 16

⇒ 3 x 5 + 5 x 3

⇒ 6 + 16

⇒ 22 (Option B)

Answer 2

`22`

Explanation:

Because:

`a * b = 2a - 3b + ab`

Then:

`3 * 5 + 5 * 3`

`6 - 15 + 15 + 10 - 9 + 15 \\ = 22`