Glencoe Math: Course 2, Volume 2
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Glencoe Math: Course 2, Volume 2 View details
4. The Distributive Property
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Exercise 23 Page 380

The Distributive Property states that to multiply a sum or a difference by a number, multiply each term inside the parentheses by the number outside the parentheses.

Example Answer: 2a+2b+ay+by

Practice makes perfect
Let's consider the given expression. (a+b)(2+y) We are asked to write an equivalent expression for the given expression using the Distributive Property. To do so, let's start by recalling this property. According to the Distributive Property, to multiply a sum or a difference by a number, we can multiply each term inside the parentheses by the number outside the parentheses. 1{{\color{#0000FF}{p}}( {\color{#009600}{q}}+{\color{#FD9000}{r}}) = {\color{#0000FF}{p}}{\color{#009600}{q}} + {\color{#0000FF}{p}}{\color{#FD9000}{r}} \\[0.3em] {\color{#0000FF}{p}}( {\color{#009600}{q}}-{\color{#FD9000}{r}}) = {\color{#0000FF}{p}}{\color{#009600}{q}} - {\color{#0000FF}{p}}{\color{#FD9000}{r}}} Notice that the given expression is a product of two sums. We can think of (a+b) as the number and use the Distributive Property with this in mind. (a+b)( 2+ y) = (a+b) (2)+ (a+b) (y) Next, we can again use the Distributive Property to remove the parentheses.
(a+b)(2)+(a+b)(y)
a(2)+b(2)+(a+b)(y)
a(2)+b(2)+a(y)+b(y)
2a+2b+ay+by
We found that 2a+2b+ay+by is one of the equivalent expressions for the given expression.