This is a combination problem.
6 nCr 2
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6 nCr 2
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Which pair of expressions is equivalent? 2(x + 5) and 2x + 10 B. 3x – 6 + 4x + 9 and 7x + 15 0. C. 4y - 2) and 4y - 2 0 D. 5y +
1 answer:
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