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Anonymous
252-70x+49 = (5x-7)(5x-7) when factored
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49 plus 7 equals 56.
49 plus 10 equals 59.
4849494949505050------394
x2 - 14x = -49 ∴ x2 - 14x + 49 = 0 ∴ (x - 7)2 = 0 ∴ x = 7
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