VGK#3

VGK#3

by Marna Zuhlsdorff -
Number of replies: 0

Los op vir x en kies die regte antwoord as \( - 2{x^2} + x = 2 \)

\( \begin{align} - 2{x^2} + x &= 2\\ - 2{x^2} + x - 2 &= 0\\ x &= \frac{{ - b \pm \sqrt {{b^2} - 4ac} }}{{2a}}\\ x &= \frac{{ - \left( 1 \right) \pm \sqrt {{{\left( 1 \right)}^2} - 4\left( { - 2} \right)\left( { - 2} \right)} }}{{2\left( { - 2} \right)}}\\ & = ERROR\\ &\therefore {\rm{geen}}\,\,{\rm{re}}\ddot ele\,\,{\rm{oplossing}} \end{align} \)