Simplify (10x² - 8x - 1) + (4x² - 8x - 5).

Solution:

Given (10x² - 8x - 1) + (4x² - 8x - 5).

We need to put together the like terms in order to simplify

(10x² + 4x²) - (8x + 8x) + (-1 - 5).

= 14x² - 16x - 6

This is the simplest form of the given expression

Simplify (10x² - 8x - 1) + (4x² - 8x - 5).

Summary:

The simplest form of the given expression (10x² - 8x - 1) + (4x² - 8x - 5) is 14x² - 16x - 6.