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What is the value of $(5 abla 1)+(4 abla 1)$ if the operation $k abla m$ is defined as $k(k-m)$?

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A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

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Official solution

From the definition, $(5 abla 1)+(4 abla 1)=5(5-1)+4(4-1)=5(4)+4(3)=20+12=32$.

Source: Omni-MATH, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.