Question

Kindly answer the question 18,19,20 if u answer it correctly I would mark u as brilliant plzzz I need the answer immediately

Answer 1

3x+2y=12 , xy=6

(3x+2y)^2 =12^2

=9x^2+4y^2+12xy=144

ie, 9x^2+4y^2+(12×6)=144
=9x^2+4y^2+72=144

9x^2+4y^2=144-72
=72.