If a-b-15-4-154-15- Find a-b

(4+√(15)4 √(15))· (4+√(15)4+√(15)) = #10;((4+√(15))^216 15) =16+15+8√(15) = 31+8√(15) ∴ #10;a=31>and> b=8 ∴ a+b=39 ...

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Variable Separable Method

If a+b√15=4...

Question

If $a + b \sqrt{15} = \frac{4 + \sqrt{15}}{4 - \sqrt{15}}$ . Find $a + b$

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If 2A = 3B and 4B = 5C, then A : C = ?
(a) 4 : 3
(b) 8 : 15
(c) 3 : 4
(d) 15 : 8

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