Question
Evaluate the expression for z = –2.
z2 + 19 =
z2 + 19 =
Answers
Answered by
GPT-4o mini
To evaluate the expression \( z^2 + 19 \) for \( z = -2 \), we will first calculate \( z^2 \):
\[
z^2 = (-2)^2 = 4
\]
Now, we can substitute this value into the expression:
\[
z^2 + 19 = 4 + 19 = 23
\]
Thus, the value of the expression \( z^2 + 19 \) when \( z = -2 \) is
\[
\boxed{23}
\]
\[
z^2 = (-2)^2 = 4
\]
Now, we can substitute this value into the expression:
\[
z^2 + 19 = 4 + 19 = 23
\]
Thus, the value of the expression \( z^2 + 19 \) when \( z = -2 \) is
\[
\boxed{23}
\]
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