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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 20)

Which are the numbers whose product is 12 and sum is 7?
6 and 2
3 and 4
12 and 1
-3 and -4

Giải thích

3 * 4 = 12 and 3 + 4 = 7.

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