Question

8a^3 +27b^3 if (2a+3b)=14 and ab=8​

Answer 1

Step-by-step explanation:

2a+3b=14andab=8

To find out:-

8a {}^{3} + 27b {}^{3} 8a

3

+27b

3

\huge\underline\mathfrak\blue{Solution..}

+ 3

+27b

3

=(2a)

3

+(3b)

3

=(2a+3b)

3

−3×2a×3b(2a+3b)

=14

3

−18ab×14

=2744−18×8×14

=2744−2016

=728

Answer 2

Answer:

2a + 3b = 14 and ab = 8

to find out

8a³ + 27b³

Solution...

8a³ + 27b³ = (2a)³ + (3b)³

(2a+3b)³ - 3 * 2a * 3b(2a+3b)

= 14³ - 18ab  * 14

2744 - 18 * 8 * 14

2744 - 2016

= 728

hope it helps you

Step-by-step explanation:

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