Question

explain it please
it's urgent
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Answer 1

ʜᴇʏᴀ ᴍᴀᴛᴇ ʜᴇʀᴇ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ 
.
.
$\sqrt{ {5x}^{2} } + 5x - 3x - 3 \sqrt{5} = 0$
$\sqrt{5} x(x + \sqrt{5} ) - 3(x + \sqrt{5)} = 0$
$( \sqrt{5} x - 3)(x + \sqrt{5)} = 0$

$x = \frac{3}{ \sqrt{5} } \: and \: - \sqrt{5}$