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If that's +42x + 49, the answer is (3x + 7)(3x + 7) or (3x + 7)2

If that's -42x + 49, the answer is (3x - 7)(3x - 7) or (3x - 7)2

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11y ago
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Q: How do you factor this trinominal 9x2 42x 49?
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