Question

Simplify.
−4x2−5(x+3)+x2

−4x2−5x−15
−3x2−5x−15
−9x2−15
−23x

Answer 1

- 3 x² - 5 x - 15

Explanation:

Let's consider the following expression.

- 4 x² - 5 (x + 3) + x²

First, we will apply the distributive property of multiplication over addition.

- 4 x² - 5 x - 15 + x²

Now, we order the terms according to their order.

- 4 x² + x² - 5 x - 15

Finally, we add elements of the same order.

- 3 x² - 5 x - 15

The simplified expression is - 3 x² - 5 x - 15.

Answer 2

−4x²−5(x+3)+x² = x²(-4+1) -5x -15 . . . . eliminate the parentheses, collect terms

... = -3x² -5x -15 . . . . . . matches your 2nd selection