factorise 8a^3+ 27b^3
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Answered by
29
hay!!
Dear user -
8a³+27b³
=>YOU know that formula (a³-b³) = (a-b)(a²+ab+b²)
8a³ +27b³
=> ( 2a)³ + (3b)³
Use the formula .
Then,
( 2a + 3b) ( 4a² -6ab +9b²)
I hope it's help you
Dear user -
8a³+27b³
=>YOU know that formula (a³-b³) = (a-b)(a²+ab+b²)
8a³ +27b³
=> ( 2a)³ + (3b)³
Use the formula .
Then,
( 2a + 3b) ( 4a² -6ab +9b²)
I hope it's help you
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Nice one
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Answered by
4
8 = 2^3 and 27 = 3^3 ... so apply a^3 + b^3... and then factorise...
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thank you..:)
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