Question

Rationalise & find value of cubic expression If x = 1/(8 √60),what is the value of (x^3 - 5x^2 + 8x - 4) ?​

Answer 1

Answer:

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Step-by-step explanation:

$x = \frac{1}{8 \sqrt{60} } \\ = \frac{1}{16 \sqrt{15} } \\ = \frac{ \sqrt{15} }{16 \times 15} \\ = \frac{ \sqrt{15} }{240}$