Question

El valor de x en la expresion (-8)ˆ1/x=-2=x es,
A.8
B.5
C.3
D.2

Answer 1

x=3
(-8^1/x)/-1=-2/-1
(8^1/x)=2
2^3^1/x$( -8^{1/x})=-2 \frac{-8^{\frac{1}{x}}}{-1}=\frac{-2}{-1} 8^{\frac{1}{x}}=2 \left(2^3\right)^{\frac{1}{x}}=2 2^{3\cdot \frac{1}{x}}=2 3\cdot \frac{1}{x}=1 3/x =1 x=3$