2 years ago

Please Help!!!!! WIll mark Brainliest if correct!

Mathematics

1 answer:

SpyIntel [72]2 years ago

3 0

The 3rd option is the answer

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solniwko [45]

Step-by-step explanation:

Here we are given that , the Value of

$3x - 2y = 9$
$27x^3 - 8y^3 = 1377$

And we need to find the prove that ,

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We know a identity as ,

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On cubing both sides of the given equation,

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Simplify and then substitute ,

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$1377 - 18xy (9) = 729$

$162xy = 1377-729$

$xy =\dfrac{648}{162}$

$xy = 4$

Hence Proved !

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3 years ago

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Step-by-step explanation:

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