Use the vertical method

asked Oct 18, 2023 161k views

1 vote

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6 votes

Answer:

(b) 4a³

Explanation:

The value of B is the sum of the a-cubed terms:

12a³ -6a³ -2a³ = (12 -6 -2)a³ = 4a³ . . . . . matches the 2nd choice

Additional comment

A = (-2a)(-2a) = 4a²

Slotheroo answered Oct 21, 2023

5.4k points

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