Question

sa se calculeze:√27x+4=√3x

Answer 1

$\sqrt{27} x + 4 = \sqrt{3} x$

$3 \sqrt{3} x + 4 = \sqrt{3} x$

$3 \sqrt{3} x - \sqrt{3} x = - 4$

$2 \sqrt{3} x = - 4$

$x = - \frac{4}{2 \sqrt{3} }$

$x = - \frac{2}{ \sqrt{3} }$

$x = - \frac{2 \sqrt{3} }{3}$

Answer 2

√27=3√3
√27x+4=√3x
3√3x - √3x= - 4
2√3x = - 4
x= - 4/2√3 = - 2/√3     - raționalizăm cu √3
x= - 2√3/3