172k views
4 votes
Solve this equation for X. If necessary, round your answer to the nearest integer
(2x + 2)^{ (1 )/(3) = - 2

User Brette
by
8.5k points

2 Answers

3 votes
the answer is x = 1 :)
User Nadina
by
7.4k points
5 votes

Answer

x = 1

Step-by-step explanation:

Given the following equation


\begin{gathered} (2x+2)^{(1)/(2)}=\text{ -2} \\ \text{According to the law of indicies} \\ x^{(1)/(2)}\text{ = }\sqrt[]{x} \\ (2x+2)^{(1)/(2)}\text{ = }\sqrt[]{(2x\text{ + 2)}} \\ \text{Step 1: Take the square of both sides} \\ \sqrt[]{(2x\text{ + 2) }}\text{ = -2} \\ \sqrt[]{(2x+2)^2}=-2^2 \\ 2x\text{ + 2 = 4} \\ \text{Collect the like terms} \\ 2x\text{ = 4 - 2} \\ 2x\text{ = 2} \\ \text{Divide both sides by 2} \\ (2x)/(2)\text{ = }(2)/(2) \\ x\text{ = 1} \end{gathered}

Therefore, x = 1

User EBlake
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories