Evaluate
−
7
z
2
k
2
−
2
z
k
+
z
−
k
+
15
\displaystyle -{7}{z}^{{2}}{k}^{{2}}-{2}{z}{k}+{z}-{k}+{15}
−
7
z
2
k
2
−
2
z
k
+
z
−
k
+
15
when
z
=
3
\displaystyle {z}={3}
z
=
3
and
k
=
−
5
\displaystyle {k}=-{5}
k
=
−
5
Question Help:
Video
Submit
Try a similar question
License
[more..]
Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity