Question

que 26 plz tell fast i solved but no solution was ready to come

Answer 1

given,
ab=6
8a^3+27b^3=793
(2a)^3+(3b)^3=793
____ _____
a. b
by formula ,
a^3+b^3= (a+b)(a^2-2ab+b^2)
= (2a+3b)(2a^2-2a×3b+3b^2)=793
=2a+3b=793/(2a^2)+(3b^2)-2a×3b)=793
by formula a^2+b^2=(a-b)^2+2ab
= (2a+3b)=793/(2a+3b) + 6ab-(6ab)
=(2a+3b)=793/(2a+3b)