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Solve this equation with an explaination

Solve this equation with an explaination-example-1
User Pvl
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1 Answer

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Answer:

x < -2 or x > 4

Explanation:

This is an absolute value inequality of the form

|X| ≥ b

where X is an expression with a variable, and b is a non-negative number.

An absolute value inequality of this form is solved by changing the form into a compound inequality using the word "or."

To solve

|X| ≥ a,

solve the compound inequality

X < - a or X > a

In other words, when the absolute value of an expression is greater than (or greater than or equal to) a number, rewrite the absolute value inequality as

expression < -number or expression > number

In your problem, you have

|2x - 2| ≥ 6

The expression is 2x - 2.

The number is 6.

You change the absolute value inequality to the following compound inequality:

2x - 2 ≤ -6 or 2x - 2 > 6

Now you solve each inequality always keeping the word "or" in between them.

2x - 2 ≤ -6 or 2x - 2 > 6

2x < - 4 or 2x > 8

x < -2 or x > 4

I hope you understand the solution and explanation. If you have any questions, ask in the comments.

User RuudVanNistelrooy
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