Question

DAU COROANA
1/x² = 1/25 -1/75
aflati x la 2​

Answer 1

$\frac{1}{x^2}=\frac{1}{25}-\frac{1}{75}\\ \\ \frac{1}{x^2}=\frac{3-1}{75}\\ \\ \frac{1}{x^2}=\frac{2}{75}\\ \\ 2x^2=75\\ \\ x^2=\frac{75}{2}$

$x=$ ±$\sqrt{\frac{75}{2}}$$=$ ±$\frac{\sqrt{75}}{\sqrt{2}}$$=$ ±$\frac{5\sqrt{3}}{\sqrt{2}}$$=$ ±$\frac{5\sqrt{6}}{2}.$

/robertinni