<span>9x(2+y)
= 18x + 9xy
answer
</span><span>18x+(9x⋅y)
</span><span>(9x⋅2)+(9x⋅y) 1</span>

Complete the square on the left side:

Then the equation becomes

Both 14 + √186 and 14 - √186 are positive numbers, so we can take the logarithm (base 3) of both sides without issue:

Then in increasing order, the solutions are
<em>c</em> = log₃(14 - √186), <em>c</em> = log₃(14 + √186)
I did a bit of it then put it in a calculator and got 0.512269939
2632*1340*-155*45*9198*14663*0*650*1310*18090
=0