To solve the quadratic equation \((x−18)^2 = 196\) using square roots, we can follow these steps:
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Take the square root of both sides: \[ x - 18 = \pm \sqrt{196} \]
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Calculate \(\sqrt{196}\): \[ \sqrt{196} = 14 \]
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This gives us two equations: \[ x - 18 = 14 \quad \text{and} \quad x - 18 = -14 \]
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Solve for \(x\) in each case:
- For \(x - 18 = 14\): \[ x = 14 + 18 = 32 \]
- For \(x - 18 = -14\): \[ x = -14 + 18 = 4 \]
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Thus, the solutions are: \[ x = 32 \quad \text{and} \quad x = 4 \]
So, the solutions to the original equation are \({32, 4}\).
The correct response from your options is: {32, 4}.