1.
Vraag 1 staat op C. Oplossen van machtsvergelijkingen.
2.
\eqalign{
& x^2 - 9x + 18 = 2x - 6 \cr
& x^2 - 11x + 24 = 0 \cr
& (x - 3)(x - 8) = 0 \cr
& x = 3 \vee x = 8 \cr
& (3,0) \cr
& (8,10) \cr}
3.
\eqalign{
& x^2 - 9x + 18 \geq - 2x + 8 \cr
& {\text{Eerst:}} \cr
& x^2 - 9x + 18 = - 2x + 8 \cr
& {\text{x}}^{\text{2}} - 7x + 10 = 0 \cr
& (x - 2)(x - 5) \cr
& x = 2 \vee x = 5 \cr
& {\text{Conclusie:}} \cr
& x \leq 2 \vee x \geq 5 \cr}
4.
\eqalign{
& {\text{Eerst:}} \cr
& x^2 - 9x + 18 = 0 \cr
& (x - 3)(x - 6) = 0 \cr
& x = 3 \vee x = 6 \cr
& {\text{Conclusie:}} \cr
& 3 < x < 6 \cr}
5.
I = 1,5 \cdot 8^3 = 768\,\,cm^3
6.
\eqalign{
& 1,5b^3 = 1300cm^3 \cr
& b^3 = 866\frac{2}
{3} \cr
& b = \root 3 \of {866\frac{2}
{3}} \approx {\text{9}}{\text{,5cm}} \cr}
