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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 1 - No. 40)

What are the two numbers that multiply to -12 and add to +1?
6 and -2
4 and -3
3 and -4
12 and -1

Vysvětlení

3 * -4 = -12 and 3 + (-4) = -1.

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