Question

if 3x+2y=12 and xy=6 find the value of 9x²+4y²​

Answer 1

$\huge{\mathcal{\blue{\underline{Answer}}}}$

$(3x + 2y) {}^{2} = (3x) {}^{2} + (2y) {}^{2} + 2(3x)(2y) \\ (12) {}^{2} = 9x {}^{2} + 4y {}^{2} + 12(xy) \\ 144 = 9x {}^{2} + 4y {}^{2} + 12(6) \\ 144 = 9x {}^{2} + 4y {}^{2} + 72 \\ 14 4 - 72 = 9x {}^{2} + 4y {}^{2} \\ 72 = 9x {}^{2} + 4y { }^{2}$

Answer 2

Step-by-step explanation:

the answer is 72

According to me x=2 and y=3