Maths Number System
Simplify: (1.5³+4.7³+3.8³–3×1.5×4.7×3.8)/(1.5²+4.7²+3.8²–1.5×4.7–4.7×3.8–3.8×1.5)
सरल कीजिए: (1.5³+4.7³+3.8³–3×1.5×4.7×3.8)/(1.5²+4.7²+3.8²–1.5×4.7–4.7×3.8–3.8×1.5)
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A
(a) 9
B
(b) 10
C
(c) 16
D
(d) 15
Correct Answer: Option B
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Explanation / व्याख्या:
Formula: (a³+b³+c³-3abc)/((a²+b²+c²-ab-bc-ca)) = a+b+c = 1.5+4.7+3.8=10.
a³+b³+c³-3abc = (a+b+c)(a²+b²+c²-ab-bc-ca)। अतः उत्तर=a+b+c=1.5+4.7+3.8=10।
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