Question

if a+b=3 then a³+b³+9ab=??
PLS REPLY MARKING THE CORRECT ONE THE BRAINLIEST

Answer 1

here is your answer

a+b=3,

then

(a+b)³=3³,

a³+b³+3ab(a+b)=27,

a³+b³+3ab×3=27,

then

a³+b³+9ab=27

mark it as brainliests

Answer 2

Hello!!

The answer is in the attachment ☝️☝️.


The answer is 27.

Hope it helps:(