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Let f(x) = x^(2) - 5x + 6, g(x) = f(|x|)...

Let `f(x) = x^(2) - 5x + 6, g(x) = f(|x|), h(x) = |g(x)|`
The set of values of `x` such that equation `g(x) + |g(x)| = 0` is satisfied contains

A

`-3`

B

`0`

C

`2`

D

`(5)/(2)`

Text Solution

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The correct Answer is:
To solve the problem, we need to find the set of values of \( x \) such that the equation \( g(x) + |g(x)| = 0 \) is satisfied. Let's break this down step by step. ### Step 1: Define the function \( f(x) \) We start with the function: \[ f(x) = x^2 - 5x + 6 \] We can factor this quadratic equation: \[ f(x) = (x - 3)(x - 2) \] This shows that the roots of \( f(x) \) are \( x = 2 \) and \( x = 3 \). ### Step 2: Define the function \( g(x) \) Next, we define \( g(x) \): \[ g(x) = f(|x|) = (|x| - 3)(|x| - 2) \] This means we need to evaluate \( g(x) \) based on the absolute value of \( x \). ### Step 3: Determine the expression for \( g(x) \) We can analyze \( g(x) \) for different cases based on the value of \( x \): - For \( x \geq 0 \): \[ g(x) = (x - 3)(x - 2) \] - For \( x < 0 \): \[ g(x) = (-x - 3)(-x - 2) = (3 + x)(2 + x) \] ### Step 4: Define the function \( h(x) \) Now, we define \( h(x) \): \[ h(x) = |g(x)| \] This means \( h(x) \) will take the absolute value of \( g(x) \). ### Step 5: Set up the equation \( g(x) + |g(x)| = 0 \) The equation we need to solve is: \[ g(x) + |g(x)| = 0 \] This can be rewritten as: \[ g(x) + h(x) = 0 \] Since \( h(x) = |g(x)| \), this implies: \[ g(x) + g(x) = 0 \quad \text{if } g(x) \geq 0 \] or \[ g(x) + (-g(x)) = 0 \quad \text{if } g(x) < 0 \] The first case gives no solutions, so we focus on the second case: \[ g(x) = 0 \] ### Step 6: Solve \( g(x) = 0 \) We need to find the values of \( x \) such that: \[ g(x) = 0 \] From our earlier definitions: - For \( x \geq 0 \): \[ (x - 3)(x - 2) = 0 \quad \Rightarrow \quad x = 2, 3 \] - For \( x < 0 \): \[ (3 + x)(2 + x) = 0 \quad \Rightarrow \quad x = -3, -2 \] ### Step 7: Combine the results The solutions to \( g(x) = 0 \) are: \[ x = -3, -2, 2, 3 \] ### Final Answer The set of values of \( x \) such that the equation \( g(x) + |g(x)| = 0 \) is satisfied is: \[ \{ -3, -2, 2, 3 \} \]

To solve the problem, we need to find the set of values of \( x \) such that the equation \( g(x) + |g(x)| = 0 \) is satisfied. Let's break this down step by step. ### Step 1: Define the function \( f(x) \) We start with the function: \[ f(x) = x^2 - 5x + 6 \] We can factor this quadratic equation: ...
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