Mathematics for IGCSE & O level - Algebraic Manipulation (Section 5 - No. 42)

Which of the following is the simplified form of -4(2x - 1)?

-8x - 4

-8x + 4

8x - 4

8x + 4

解释

-4 * 2x + -4 * -1 = -8x + 4

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