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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 8 - No. 1)

Which of the following shows the correct way to factor 3x + 6?
3(x+6)
3(x+2)
x(3+6)
6(3x)

解释

The GCF of 3x and 6 is 3. So we factor out 3. The result is 3(x+2)

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