if 3x-2y=5 and xy=6 then 9xsq.-4ysq.=?
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\left[x \right] = \left[ \frac{6}{y}\right][x]=[y6]
\left[x \right] = \left[ \frac{5}{3}+\frac{2\,y}{3}\right][x]=[35+32y]
Algebra functional
\left[x \right] = \left[ \frac{5}{3}+\frac{2\,y}{3}\right][x]=[35+32y]
Algebra functional
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