Sketch the graph of $y=\left| {{x}^{2}}-2x-15 \right|$. Hence, write down the range of values of \

Question

Sketch the graph of $y=\left| {{x}^{2}}-2x-15 \right|$. Hence, write down the range of values of $k$ for which the equation $\left| {{x}^{2}}-2x-15 \right|=k$ has exactly $2$ solutions.

Accepted Answer

$k=0$ or $k>16$; graph shown in the solution.

Quadratic Graph

Quadratic Graph

Solution:

Solution locked