To estimate the value of \(6 \times 2 - \sqrt{}\), we first need to clarify the expression. Assuming it is \(6 \times 2 - \sqrt{2}\):
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Calculate \(6 \times 2\): \[ 6 \times 2 = 12 \]
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Now, estimate \(\sqrt{2}\). Knowing that \(\sqrt{2}\) is approximately \(1.41\):
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Then subtract \(\sqrt{2}\) from \(12\): \[ 12 - 1.41 \approx 10.59 \]
Based on the estimated calculations, let’s consider which of the provided choices is the closest to 10.59:
- 6.4
- 8.4
- 9.8
- 7.1
None of these options are very close to 10.59, but since 9.8 is the closest option, the best estimate would be:
9.8.