Question

2x3+1=55 doy 13 puntos xfass

Answer 1

$2x^{3} +1 = 55$

$2x3+1=55$

$2x^{3} = 54$

$x^{3} = \frac{54}{2}$

$x^{3} = 27$

$\sqrt{ x^{3} } = \sqrt{27}$

$\sqrt{ x^{3} } = \sqrt{3^{3} }$

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

CS = (-3; 3)