Use the distributive property to simplify the expression.?

Question

-7r(8+3r)

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Answer 1 · 2018-03-21T23:26:11

$- 21 r^{2} - 56 r$ $-21r^2-56r$

You would basically multiply $- 7 r$ $-7r$ with both $8$ $8$ and $3 r$ $3r$ :

$- 7 r (8) + - 7 r (3 r) =$ $-7r(8) + -7r(3r)=$

$- 21 r^{2} - 56 r$ $-21r^2-56r$

Answer 2 · 2018-07-24T03:33:32

$- 21 r^{2} - 56 r$ $-21r^2-56r$

We need to "distribute" the $- 7 r$ $-7r$ to both terms in the parenthesis. This is done with multiplication.

We can essentially rewrite this expression as

$- 7 r (8) - 7 r (3 r)$ $-7r(8)-7r(3r)$

Notice, we have "distributed" the $- 7 r$ $-7r$ . We now multiply to get

$- 21 r^{2} - 56 r$ $-21r^2-56r$

Hope this helps!