a=3+2 হলে a3+1a3
a=3+2 হলে a3+1a3 Correct Answer 183
a = √3 + √2 1/a = 1/(√3 + √2) = {1(√3 - √2)}/{√3 + √2)(√3 - √2)} = (√3 - √2)/{(√3)2 - (√2)2} = (√3 - √2)/(2 - 1) = √3 - √2 So, a3 + 1/a3 = (a + 1/a)3 - 3(a.1/a) (a + 1/a) = (√3 + √2 + √3 - √2)3 - 3(√3 + √2 + √3 - √2) = (2√3)3 - 3(2√3) = 8*3√3 - 6√3 = 24√3 - 6√3 = 18√3
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Feb 20, 2025