Question

if a+b=12andab=27 then the value of acube+B cube is​

Answer 1

Answer:

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Step-by-step explanation:

GIVEN :

a + b = 12

ab = 27

TO FIND :

a³ + b³

SOLUTION:

= a³ + b³

We know that,

a³ + b³ = (a + b)³ - 3ab (a + b)

= (12)³ - 3(27) (12)

= 1728 - 81 (12)

= 1728 - 972

= 756

Therefore, the value of a³ + b³ = 756.

Answer 2

Answer:

a3+b3=(a+b)({a+b}² -3ab)

=12(12²-3×27)

=12×53

=636

Step-by-step explanation:

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