Question

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

Answer 1

formula= (a+b)=a×a+b×b+2ab

=3x×3x+2y×2y+2×3x×2y

9x2+4y2+12xy

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Answer 2

⬆See attachment ⬆

Thanks