12a-3b2, when a=9,b=4

asked Oct 5, 2022 135k views

2 votes

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4 votes

Answer:

Explanation:

Just substitute the value

$12\cdot (9) - 3 \cdot(4)^2 = \\108 - 48 =60$

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3 votes

Answer:

$12a - 3 {b}^(2) = 12(9) - 3 {(4)}^(2) \\ = 108 - 48 \\ = 60$

Davinel answered Oct 11, 2022

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