Evaluate the following forms: (2a-3b)³.
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Answered by
3
Answer:
( 2a - 3b )³= (2a)³-3*(2a)²*3b+3*2a*(3b)²-(3b)³
= 8a³ - 3*4a²*3b+6a*9b²-27b³
= 8a³ - 36a²b + 54ab² - 27b³
The identity used is - ( x - y )³ = x³ - 3x²y + 3xy² - y³
Answered by
11
Answer:
2a³+3b³+3*2a²3b+3*2a*3b²
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