Question

4. Determine the following difference. (2x² + 3x - 10) - (x² - x + 111)  please explain

A.
x² + 4x -121



B.
2x - 121



C.
x² + 2x +121



D.
x² + 2x -121

Answer 1

Hi there!

Simplify th' expression :-

(2x² + 3x - 10) - (x² - x + 111)

⇒ 2x² + 3x - 10 - x² + x - 111

⇒ 2x² - x² + 3x + x - 10 - 111

⇒x² + 4x - 121

Hence,
Option A. x² + 4x - 121 is Correct

~ Hope it helps!

Answer 2

Hi there! The answer is A.

(2x² + 3x - 10) - (x² - x + 111)
Let's solve this problem step by step!

First work out the parenthesis. Because we multiply by negative 1, we mustn't forget to change the symbols in front of the factors.
2x² + 3x - 10 - x² + x - 111

Now rearrange our expression, in order to collect the terms later.
2x² - x² + x + 3x - 10 - 111

And finally collect the terms.
x² + 4x -121

The answer is A.
~ Hope this helps you!