Question

$a)(x - \sqrt{11 ) {}^{2} }$
Ajutor dau toate stelele
$b)( - x - \sqrt{11) {}^{2} }$
$c)( - x + \sqrt{11) {}^{2} }$
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Answer 1

Explicație pas cu pas:

a)

$(x - { \sqrt{11} })^{2} = {x}^{2} - 2 \sqrt{11}x + 11$

$(x - { \sqrt{11} })^{2} = 0 \implies x = \sqrt{11}$

b)

$( - x - \sqrt{11} )^{2} = {x}^{2} + 2 \sqrt{11} x + 11$

$( - x - \sqrt{11} )^{2} = 0$

$- x - \sqrt{11} = 0 \implies x = - \sqrt{11}$

c)

$( - x + \sqrt{11} )^{2} = {x}^{2} - 2 \sqrt{11}x + 11$

$( - x + \sqrt{11} )^{2} = 0$

$- x + \sqrt{11} = 0 \implies x = \sqrt{11}$