Question

Rezultatul ecuatiilior
2(x-1)-3=-11
xrad2+xrad8=rad32

Rad=radical . Va rog ajutati.ma!

Answer 1

$1)2(x - 1) - 3 = - 11$

$2x - 2 - 3 = - 11$

$2x = - 11 + 2 + 3$

$2x = - 6$

$x = - \frac{ 6}{2}$

$x = - 3$

$2)x \sqrt{2} + x \sqrt{8} = \sqrt{32}$

$x \sqrt{2} + x \times 2 \sqrt{2} = 4 \sqrt{2}$

$x \sqrt{2} + 2x \sqrt{2} = 4 \sqrt{2}$

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

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

$3x = 4$

$x = \frac{4}{3}$