Question

If 3x + 2y = 12 and xy = 6, find the value of 9x 2  + 4y 2 .

Answer 1

3x +2y = 12

on sq

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

we know xy = 6

9x^2 + 4y^2 = 72

pls mark brainliest

Answer 2

Answer:

72

Step-by-step explanation:

Given,

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.