What is the square root of 23 - 4√15 ?
\(2\sqrt5-\sqrt3\)
Calculation: \(23-4\sqrt{15}=(2\sqrt5-\sqrt3)^2\)
Answer: \(2\sqrt5-\sqrt3\gt 0\implies\sqrt{23-4\sqrt{15}}=2\sqrt5-\sqrt3\)
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Important Questions from Surds and Indices
The cube root of - 64 × - 1331 is:
If (27) m = (81) n, then m 2: mn = ?
if 49 n + 49 n + 49 n + 49 n + 49 n + 49 n + 49 n = 7 2221 , then n = ?
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The value of (0.3) [{(200 - 146)/(3 × 3 × 3)} - 3] is:
