Exercise 2 Page 236

We want to multiply the given expression. First, we will rewrite it. (-3)^3=(-3)(-3)(-3) When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different. cc Same Sign & Different Signs (+)(+)=(+) & (+)(-)=(-) (-)(-)=(+) & (-)(+)=(-) We will use the Associative Property of Multiplication to multiply the first two numbers first. There are two negative numbers so the product will be positive.

-3(- 3)

MultNegNegOnePar

- a(- b)=a* b

3* 3

Multiply

Multiply

9

Now we will multiply the remaining two numbers. The result of the first multiplication was positive and the third number is negative, so the final product will be negative.

9(- 3)

MultPosNeg

a(- b)=- a * b

-9*3

Multiply

Multiply

- 27

We can verify this using a calculator.