Question

The operation is define by a+b=ab-ab
Evaluate
8 *(-4)

Answer 1

The answer is:

-32

Work/explanation:

Remember the integer rule:

`\blacktriangleright\phantom{333}\sf{a*(-b)=-ab}`

In other words, we multiply a positive times a negative which results in a negative product.

Therefore,

8*(-4) = -32

Hence, the answer is -32.