Question

preciso da resposta urgente

Answer 1

$(4^x)^x=512\\ \\ (2^{2x})^x=2^9\\ \\ 2^{2x^2}=2^9\\ \\ 2x^2=9\\ \\ x^2=\frac{9}{2}\\ \\ x=\pm\sqrt{\frac{9}{2}}=\pm \frac{3}{\sqrt2}=\pm\frac{3\sqrt2}{2}$