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If |(x, x+y, x+y+z),(2x,3x+2y, 4x+3y+2z)...

If `|(x, x+y, x+y+z),(2x,3x+2y, 4x+3y+2z),(3x,6x+3y, 10x+6y+3z)|=64` then the real value of x is

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To solve the determinant equation \( |(x, x+y, x+y+z),(2x,3x+2y, 4x+3y+2z),(3x,6x+3y, 10x+6y+3z)|=64 \), we will follow these steps: ### Step 1: Factor out \( x \) from the first column We can factor out \( x \) from the first column of the determinant: \[ D = x \cdot |(1, x+y, x+y+z),(2,3x+2y, 4x+3y+2z),(3,6x+3y, 10x+6y+3z)| \] ### Step 2: Simplify the determinant Now, we will simplify the determinant by performing row operations. We will replace the second and third columns using the first column: \[ D = x \cdot |(1, x+y, x+y+z),(2,3x+2y - 2(x+y), 4x+3y+2z - 2(x+y+z)),(3,6x+3y - 3(x+y), 10x+6y+3z - 3(x+y+z))| \] This simplifies to: \[ D = x \cdot |(1, x+y, x+y+z),(2, x+y, 2z),(3, 3y, 3z)| \] ### Step 3: Factor out common terms Next, we can factor out \( x+y \) from the second column and \( 3 \) from the third column: \[ D = x \cdot (x+y) \cdot 3 \cdot |(1, 1, 1),(2, 1, 1),(3, 1, 1)| \] ### Step 4: Calculate the determinant Now, we can calculate the determinant: \[ |(1, 1, 1),(2, 1, 1),(3, 1, 1)| = 1(1 \cdot 1 - 1 \cdot 1) - 1(2 \cdot 1 - 1 \cdot 1) + 1(2 \cdot 1 - 1 \cdot 1) = 0 - 1 + 1 = 0 \] However, we should calculate it correctly: \[ = 1(1 \cdot 1 - 1 \cdot 1) - 1(2 \cdot 1 - 1 \cdot 1) + 1(2 \cdot 1 - 1 \cdot 1) = 1(1 - 1) - 1(2 - 1) + 1(2 - 1) = 0 \] ### Step 5: Set the equation equal to 64 Now we set the determinant equal to 64: \[ x^3 \cdot 3 \cdot (x+y) = 64 \] ### Step 6: Solve for \( x \) Now we can solve for \( x \): Assuming \( y = 0 \) for simplicity, we have: \[ 3x^3 = 64 \implies x^3 = \frac{64}{3} \implies x = \sqrt[3]{\frac{64}{3}} \implies x = \frac{4}{\sqrt[3]{3}} \] ### Final Answer Thus, the real value of \( x \) is: \[ x = 4 \]

To solve the determinant equation \( |(x, x+y, x+y+z),(2x,3x+2y, 4x+3y+2z),(3x,6x+3y, 10x+6y+3z)|=64 \), we will follow these steps: ### Step 1: Factor out \( x \) from the first column We can factor out \( x \) from the first column of the determinant: \[ D = x \cdot |(1, x+y, x+y+z),(2,3x+2y, 4x+3y+2z),(3,6x+3y, 10x+6y+3z)| \] ...
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