if 2A + 3 B equal to 7 and a b equal to 2 find 4 a square and 9 b square
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ab=2
a= 2/b
2a+ 3b= 7
4/b+3b=7
4+3b^2= 7b
3b^2-7b+4=0
3b^2-3b-4b+4= 0
3b(b-1) -4(b-1) =0
b=1, b= 4/3
a=2, 3/2
4a^2= 16 or 9
9b^2= 9 or 16
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