Question

(-9c² - 5c + 3) - (5c² + 8c + 7)​

Answer 1

reminder :

Parentheses are preceded by a + sign; they can be deleted without transforming the expression.

Parentheses are preceded by the sign −; you can delete them provided you change the signs that are inside.

(-9c² - 5c + 3) - (5c² + 8c + 7)​

-9c²-5c+3-5c²-8c-7 =

-9c²-5c²-5c-8c+3-7=

-14c²-13c-4

Explanation:

Answer 2

-14c² -13c - 4

Explanation:

In order to simplify this we are going to combine the like terms:

(-9c² - 5c + 3) - (5c² + 8c + 7)​

Distribute the minus:

-9c² - 5c + 3 - 5c² - 8c - 7

Collect like terms:

-9c ²- 5c² - 5c - 8c - 7 + 3

-14c² -13c - 4