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If 8 and -4 are the solutions for x, whi...

If `8 and -4` are the solutions for x, which of the following could be the equation?

A

`x^2 - 4x - 32 = 0`

B

`x^2 - 4x + 32 = 0`

C

`x^2 + 4x - 12 = 0`

D

`x^2 + 4x + 32 = 0`

Text Solution

AI Generated Solution

The correct Answer is:
To find the quadratic equation with the solutions \(8\) and \(-4\), we can follow these steps: ### Step 1: Write the factors based on the solutions Since the solutions of the quadratic equation are \(x = 8\) and \(x = -4\), we can express the factors of the equation as: \[ (x - 8) \quad \text{and} \quad (x + 4) \] ### Step 2: Form the equation To form the quadratic equation, we multiply the factors: \[ (x - 8)(x + 4) = 0 \] ### Step 3: Expand the equation Now, we will expand the product: \[ x^2 + 4x - 8x - 32 = 0 \] ### Step 4: Combine like terms Next, we combine the like terms: \[ x^2 + (4x - 8x) - 32 = 0 \] This simplifies to: \[ x^2 - 4x - 32 = 0 \] ### Conclusion Thus, the quadratic equation that has \(8\) and \(-4\) as solutions is: \[ x^2 - 4x - 32 = 0 \]
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