Question

(2a-3b)^3 expand this please​

Answer 1

for this we need to know

(a-b)³ = a³-b³-3ab(a-b)

now we should divide

let a =2a

b=3b

= 2a³-3b³-3(2a)(3b)(2a-3b)

= 8a³-27b³- 18ab(2a-3b)

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