9xsquared-4 xsquared=-2
\(9x^2-4x^2=-2\\ 5x^2=-2\\ x^2=-\frac{2}{5}\\ x\in \emptyset\)
9x²-4x²=-2
5x²=-2
x²=-2/5
√x²=√-2/5
x=√-10/5
