Question

Hii!! pls answer this question of mine! 50 points!!

Answer 1

Hey!


Here is your answer!!


Given
a + 2b = 5

on cubing both sides

(a +2b)3 =(5)3

a3 + 8b3 + 3(a*2b)(a + 2b) =125

a3 + 8b3 + 6ab (5)=125 ( As (a + 2b) = 5 ( Given))

a3 + 8b3 +30ab =125


Proved

$hope \: it \: helps$

Answer 2

Hey frnd..

Answer is above...

Thank you