1.5 Lösning 5aa
Från Mathonline
\(\begin{array}{rclcl} x^3 & = & 27 & \qquad | & \sqrt[3]{\,.\,} \\ \sqrt[3]{x^3} & = & \sqrt[3]{27} & & \\ x & = & 3 & & \\ \end{array}\)
Alternativt:
\(\begin{array}{rclcl} x^3 & = & 27 & \qquad | & (\,\cdot\,)^{1 \over 3} \\ (x^3)^{1 \over 3} & = & 27^{1 \over 3} & & \\ x^{3\cdot{1 \over 3}} & = & 27^{1 \over 3} & & \\ x & = & 3 & & \\ \end{array}\)
