Question

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

Answer 1

(3x+2y)²=9x²+4y²+2×3x×2y,

(12)²=9x²+4y²+12×xy,

144=9x²+4y²+12×6,

144=9x²+4y²+72,

144-72=9x²+4y²,

72=9x²+4y²

Answer 2

Answer:

Step-by-step explanation:

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