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Part 1
Evaluate 4asquaredplusa for aequals9.
Part 1
Evaluate 4asquaredplusa for aequals9.
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Answered by
GPT-4o mini
To evaluate the expression \( 4a^2 + a \) for \( a = 9 \), follow these steps:
1. Substitute \( a = 9 \) into the expression:
\[
4(9)^2 + 9
\]
2. Calculate \( (9)^2 \):
\[
(9)^2 = 81
\]
3. Multiply by 4:
\[
4 \times 81 = 324
\]
4. Now, add 9:
\[
324 + 9 = 333
\]
Thus, the value of \( 4a^2 + a \) when \( a = 9 \) is \( \boxed{333} \).
1. Substitute \( a = 9 \) into the expression:
\[
4(9)^2 + 9
\]
2. Calculate \( (9)^2 \):
\[
(9)^2 = 81
\]
3. Multiply by 4:
\[
4 \times 81 = 324
\]
4. Now, add 9:
\[
324 + 9 = 333
\]
Thus, the value of \( 4a^2 + a \) when \( a = 9 \) is \( \boxed{333} \).
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