Question

Ajutor 4,5,6,8,9 va rog ,ofer coroana

Answer 1

La 6:a)x=-7 sau x=7
b)x=-0,1 sau x=0,1
c)x apartine multimii vide
d)[tex] x^{2} = \frac{25}{4 } [/tex]
$x= - \frac{5}{2}$ sau
$x= \frac{5}{2}$
e)[tex] x^{2} = \sqrt{4} [/tex]$x^{2} = 2$[tex]x= - \sqrt{2} sau x= \sqrt{2} [/tex]
f)$x^{2} =0,5$
$x^{2} = \frac{1}{2}$
[tex]x= - \frac{ \sqrt{2} }{2} sau x= \frac{ \sqrt{2} }{2} [/tex]