Let's simplify the expressions one by one.
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Square root of 300: \[ \sqrt{300} = \sqrt{100 \times 3} = \sqrt{100} \times \sqrt{3} = 10\sqrt{3} \] So, \(\sqrt{300} = 10\sqrt{3}\) is the fully simplified form. Therefore, the claim that \(\sqrt{300} = 100\sqrt{3}\) is incorrect.
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Five times the square root of 12: \[ 5\sqrt{12} = 5\sqrt{4 \times 3} = 5\sqrt{4} \times \sqrt{3} = 5 \times 2\sqrt{3} = 10\sqrt{3} \] So, \(5\sqrt{12} = 10\sqrt{3}\) as well.
To summarize:
- \(\sqrt{300} = 10\sqrt{3}\) is correct.
- \(5\sqrt{12} = 10\sqrt{3}\) is also correct.
You have correctly identified that \(10\sqrt{3}\) is the simplified form of both radical expressions.