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MMLU / Let M=4a²−2b²+a. Let j be the value of M when a=5 and b=3, and…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Let M=4a2−2b2+aM=4a^2 - 2b^2 +a. Let jj be the value of MM when a=5a=5 and b=3b=3, and let kk be the value of MM when a=−1a=-1 and b=4b=4. Calculate j+2kj+2k.
Plain-text mathematical notation (without MathML)
Let M=4a²−2b²+a. Let j be the value of M when a=5 and b=3, and let k be the value of M when a=−1 and b=4. Calculate j+2k.
Original LaTeX notation
Let $M=4a^2 - 2b^2 +a$. Let $j$ be the value of $M$ when $a=5$ and $b=3$, and let $k$ be the value of $M$ when $a=-1$ and $b=4$. Calculate $j+2k$.

choices

  1. 29
  2. 28
  3. 27
  4. 26

subject

high_school_mathematics

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Source and history

task_id
afd9f1b1-7c74-5ed1-b466-99a76106bf5a
task_key
all--test--afd9f1b1-7c74-5ed1-b466-99a76106bf5a
task_revision_id
1
config / split
all / test

Official source

initial import