7(8+2) = 7(8)+7(2). this is a example of the property of multiplication

Distributive

Step-by-step explanation:

In any problem with a form of A(b+c) you are distributing the A to both b and c

As you can see in your example, you are distributing the 7 to both the 8 and the two

If you were to solve this problem the final answer would be 70

The property is Distributive

For this case we have that by definition, the distributive property of multiplication states that:

So, if we have the following expression:

Then, the example given is a case of distributive property of multiplication.

Distributive property of multiplication

i think is g(1)=-1.

hope that i can