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Solve the absolute value equation.
|4x| + 1 = 25

1 Answer

5 votes

Answer: x = 6 or x = -6

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Work Shown:

|4x| + 1 = 25

|4x| = 25-1

|4x| = 24

4x = 24 or 4x = -24

x = 24/4 or x = -24/4

x = 6 or x = -6

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Check:

Let's plug x = 6 into the original equation and simplify both sides.

|4x| + 1 = 25

|4*6| + 1 = 25

|24| + 1 = 25

24 + 1 = 25

25 = 25

This confirms x = 6 is a solution.

The steps for x = -6 will be very similar.

User Neil Mussett
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