expand 4a+ 5 b ka whole cube
Answers
Answered by
10
Answer:
(4a+5b)³=64a³+125b³+ 3×16a²×5b+3×25b²×4a
=64a³+125b³+240a²b+300b²a
Answered by
8
Step-by-step explanation:
(4a + 5b) ³
by using formula, ( a + b) ( a² - ab + b²)
than,
( 4a + 5b) ( 16a² - 20ab + 25b²)
or,
a³ + 3a²b + 3ab² + b³
64a³ + 240a²b + 300ab² + 125b²
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