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Given the quadratic equation (k-1)x^(2)-...

Given the quadratic equation `(k-1)x^(2)-kx+1=0`, (where `kne1)` , find k so that product of the roots is -3.

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To solve the problem, we need to find the value of \( k \) in the quadratic equation \( (k-1)x^2 - kx + 1 = 0 \) such that the product of the roots is \( -3 \). ### Step 1: Identify the coefficients The given quadratic equation can be expressed in the standard form \( ax^2 + bx + c = 0 \). Here, we have: - \( a = k - 1 \) - \( b = -k \) - \( c = 1 \) ### Step 2: Use the product of roots formula For any quadratic equation \( ax^2 + bx + c = 0 \), the product of the roots \( \alpha \) and \( \beta \) is given by: \[ \alpha \beta = \frac{c}{a} \] In our case, we know that the product of the roots is \( -3 \). Therefore, we can write: \[ \alpha \beta = \frac{1}{k - 1} \] ### Step 3: Set up the equation Since we want the product of the roots to equal \( -3 \), we can set up the equation: \[ \frac{1}{k - 1} = -3 \] ### Step 4: Cross-multiply to eliminate the fraction Cross-multiplying gives us: \[ 1 = -3(k - 1) \] ### Step 5: Distribute and rearrange the equation Distributing the \( -3 \) on the right side: \[ 1 = -3k + 3 \] Now, rearranging the equation to isolate \( k \): \[ -3k = 1 - 3 \] \[ -3k = -2 \] ### Step 6: Solve for \( k \) Dividing both sides by \( -3 \): \[ k = \frac{-2}{-3} = \frac{2}{3} \] ### Final Answer Thus, the value of \( k \) such that the product of the roots is \( -3 \) is: \[ \boxed{\frac{2}{3}} \]
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