Question

se log x + log x^3 + log x^4 = -20, o valor de x é:a) 10b)0,1c)100d)0,01e)1

Answer 1

$log(x)+log(x^3)+log(x^4)=-20$

$log(x)+3log(x)+4log(x)=-20$

$8log(x)=-20$

$log(x)=-2.5$

$x=10^{-2.5}$

$\boxed{\boxed{x\approx0.01}}$