If 2 a -3 b -1 and ab -12then 8 a3-27 b3-A- 216B- 217 - -216D- -217

The correct option is D 217 ⇒ (2a 3b)^3 = (8a^3 27b^3) 18ab(2a 3b) ⇒ ( 1)^3 = (8a^3 27b^3) (18)(12)( 1) ⇒ 1 = (8a^3 27b^3) + 216 ⇒ (8a^3 27b ...

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Expansion of (x-y)^3

If 2 a -3 b =...

Question

If $2 a - 3 b = - 1$ and $a b = 12$

then

$8 a^{3} - 27 b^{3} =$

$216$

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$217$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$- 216$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$- 217$

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Similar questions

2 a + 3 b + c = 0

8 a^{3} + 27 b^{3} + c^{3} = 18 a b c

8 a^{3} + 27 b^{3} + c^{3}

2 a + 3 b + c = 0

(2 a + 3 b)

8 a^{3} + 36 a^{2} b + 54 a b^{2} + 27 b^{3}

(3 b - 2 a)

27 b^{3} - 54 b^{2} a + 36 b a^{2} - 8 a^{3}

(2 a - 3 b)^{3}

= 8 a^{3} - 27 b^{3} - 36 a^{2} b + 54 a b^{2}

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