exam Maths Puzzle Numerical Ability

Please help me with the problem below. Thank you!

sqrt7(2sqrt3+3sqrt7)

Thank you very much!

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exam Other Question

5^x=12 use log to solve for x.

The interest rate on an equity line of credit was 7 7/8 % last month. This month the interest rate is 10 3/2%. How many percentage points has the interest rate increased?

Thank you for your help.