Question

Use properties of operations to simplify 5s(3+s)-(2s+10)

Answer 1

Answer:

$5s^2 +13s-10$

Step-by-step explanation:

Given the expression

$5s(3+s)-(2s+10)$

First, use distributive property:

$5s(3+s)=5s\cdot 3+5s\cdot s=15s+5s^2\\ \\-(2s+10)=(-1)\cdot (2s+10)=(-1)\cdot 2s+(-1)\cdot 10=-2s-10$

Now, the given expression is equivalent to the following expression:

$15s+5s^2-2s-10$

Rewrite this expression using commutative property:

$5s^2+15s-2s-10\\ \\=5s^2 +13s-10 \ [\text{Add the like terms}]$