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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 48)

Which of the following is a correctly factored expression for 3x + 6y?
3(x + 2y)
x(3 + 6y)
2(3x + 3y)
3x(1 + 2y)

説明

3x+6y = 3(x + 2y)

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