Question

which expression is equivalent to 4x^2 + 9x - 2x + x - 5?

Answer 1

4x^2 + 9x - 2x + x - 5

To simplify, we can only add and subtract on pairs of like terms. Like terms are terms that have the same variables and powers.

Thus, we get,

$\text{ 4x}^2+\text{ 9x - 2x + x - 5}$$\text{ 4x}^2\text{ + (9x -2x + x) - 5}$$4x^2\text{ + (8x) - 5}$$\text{ 4x}^2\text{ + 8x -5}$