Question

If 3x + 2y = 12 and xy = 6​

Answer 1

Answer:

3x+2y=12

Squaring both sides, we get

(3x+2y)²=144

=9x²+4y²+2×3x×2y=144 9x²+4y² =144−12xy 9x² +4y² =144−12×6 since xy =6 9x²+4y²=144−72=72 9x²+4y²=72