3.1k views
1 vote
HELP!!!
Find the exact solution of x. 3x2 + 7 = 28

User Pavloko
by
6.7k points

2 Answers

2 votes

Answer:

2.65 I think I am not sure but the solution

Explanation:

3x² = 28 - 7

3x² = 21

x² = 7

x = 2.65

User Sameer Chaudhari
by
6.5k points
4 votes

Answer:

x = ±
√(7)

Explanation:

Given

3x² + 7 = 28 ( subtract 7 from both sides )

3x² = 21 ( divide both sides by 3 )

x² = 7 ( take the square root of both sides )

x = ±
√(7)

User Meltem
by
5.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.