Question

THE
If (a+b) = 12 and (ab) = 27, Find
Value of
of (a³+b³)​

Answer 1

Step-by-step explanation:

Hey !!!

a + b = 12 |given|

ab = 27

•°• we know that

a³ + b ³ = (a + b ) ( a² + b² - ab )

and , ( a + b ) ²- 2ab = a² + b²

so , a³ + b³= ( a + b ){ ( a + b )² - 3ab }

hence , a³ + b³ = 12{12²- 3 ×27 } ✔ putting the given value

=> 12 { 144- 3×27 }

=> 12×63

= > 756 Answer

a³ + b³ = 756 Answer

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Hope it helps you !!