340,328 views
11 votes
11 votes
Question 15.
Which expression is equivalent to
(4x³ + 5x² + 2) + (3x² - 7x + 4)?

User Robocat
by
3.1k points

2 Answers

26 votes
26 votes

Answer:

4x³ + 8x² - 7x + 6

Explanation:

remove the brackets by distributing the sign.

4x³ + 5x² + 2 + 3x² - 7x + 4

4x³ + 8x² - 7x + 6

Gather like terms.

If you want to factorise (optional)

4x³ + 8x² - 7x + 6 =

4x²(1 + 2x) - 6x + 3 + 3 - x

4x²(1 + 2x) - 3(1 + 2x) + 9 - x

(4x² - 3) (1 + 2x) + 9 - x

User Esqarrouth
by
2.9k points
17 votes
17 votes
Here’s the answer hopefully you can understand my handwriting
Question 15. Which expression is equivalent to (4x³ + 5x² + 2) + (3x² - 7x + 4)?-example-1
User Ferndopolis
by
2.9k points