Question

If 2a-3b=3 and ab=2 find the value of 8a³-27b³​

Answer 1

8a³-27b³

(2a-3b)³=8a³-27b³-18ab(2a-3b)

Formula used

(a+b)³=a³-b³-3ab(a-b)

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(3)³=8a³-27b³-18(2)(3)

27=8a³-27b³-108

27+108=8a³-27b³

135=8a³-27b³

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karthikrikky12 ♥️