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What does the question mark stand for in the following when you factorise:

12x2 + 3xy = 3x(?+y)

1 Answer

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Explanation:

Since 12x² = 3x * 4x and 3xy = 3x * y,

12x² + 3xy = (3x)(4x) + (3x)(y) = 3x(4x + y).

Hence the question mark stands for 4x.

User Luckybug
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