Question

1)x²=3,6
Помогите плиз
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Answer 1

Ответ:

$x^2=3,6\\\\x=\pm \sqrt{3,6}\\\\x=\pm \sqrt{\dfrac{36}{10}}\\\\x=\pm \dfrac{6}{\sqrt{10}}\\\\x=\pm \dfrac{3\sqrt{10}}{5}\\\\Otvet:\ \ x_1=- \dfrac{3\sqrt{10}}{5}\ ,\ x_2= \dfrac{3\sqrt{10}}{5}\ .$