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4 votes
|x-2| > square root (x)

2 Answers

3 votes

Answer:

x = 0

Explanation:

I. When x cant be negative value and

II. Find possible positive value

If x = 0

|0-2| >
√(0)

|-2| > 0

2 > 0 true

If x = 1

|1 - 2| >
√(1)

| -1 | > 1

1 > 1 false

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User Rachcha
by
4.1k points
2 votes

Answer:

Explanation:

x ≥ 0 (because the square root)


|x-2| > √(x)\\\\1)\ if \ x-2 >0 \ (\ or\ x > 2):\\|x-2|=x-2\\\\x-2 > \sqrt(x) \Longrightarrow\ (x-2)^2 > x\\\Longrightarrow\ x^2-4x+4 > x\\\Longrightarrow\ x^2-5x+4 > 0\\\Longrightarrow\ (x-1)(x-4) > 0\\\Longrightarrow\ x<1\ or\ x>4 \Longrightarrow\ x >4 \ (since\ x>2)\\\\


2)\ if\ x-2 <0 \ (\ or\ x < 2):\\|x-2|=-(x-2)=-x+2\\\\-x+2 > \sqrt(x) \Longrightarrow\ (-x+2)^2 > x\\\Longrightarrow\ x^2-4x+4 > x\\\Longrightarrow\ x^2-5x+4 > 0\\\Longrightarrow\ (x-1)(x-4) > 0\\\Longrightarrow\ x<1\ or\ x>4 \Longrightarrow\ x\geq 0\ and \ x\leq 1 \\

Sol= [0, 1] ∪ ]4,+∞) ***** corrected

|x-2| > square root (x)-example-1
User Muntu
by
4.2k points