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If alpha and (1)/(alpha) are zeros of 4x...

If `alpha` and `(1)/(alpha)` are zeros of `4x^(2)-17x+k-4`, then find the value of `k`.

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To find the value of \( k \) given that \( \alpha \) and \( \frac{1}{\alpha} \) are the zeros of the polynomial \( 4x^2 - 17x + k - 4 \), we can follow these steps: ### Step 1: Identify the coefficients The given polynomial is \( 4x^2 - 17x + (k - 4) \). Here, we can identify: - \( a = 4 \) (coefficient of \( x^2 \)) - \( b = -17 \) (coefficient of \( x \)) - \( c = k - 4 \) (constant term) ### Step 2: Use the properties of the roots For a quadratic equation \( ax^2 + bx + c = 0 \), the sum of the roots \( m + n \) and the product of the roots \( m \cdot n \) can be given by: - Sum of the roots: \( m + n = -\frac{b}{a} \) - Product of the roots: \( m \cdot n = \frac{c}{a} \) ### Step 3: Calculate the sum of the roots Since the roots are \( \alpha \) and \( \frac{1}{\alpha} \): - The sum of the roots \( \alpha + \frac{1}{\alpha} = -\frac{-17}{4} = \frac{17}{4} \) ### Step 4: Calculate the product of the roots The product of the roots is: - \( \alpha \cdot \frac{1}{\alpha} = 1 \) ### Step 5: Set up the equation for the product of the roots Using the product of the roots formula: \[ \alpha \cdot \frac{1}{\alpha} = \frac{c}{a} \] Substituting the values we have: \[ 1 = \frac{k - 4}{4} \] ### Step 6: Solve for \( k \) To find \( k \), we can multiply both sides by 4: \[ 4 = k - 4 \] Now, add 4 to both sides: \[ k = 4 + 4 = 8 \] Thus, the value of \( k \) is \( 8 \). ### Summary The value of \( k \) is \( 8 \). ---
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