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Forrest Brakus

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3y ago
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13y ago

49

Look at the term involving 'x'. Halve the coefficient and add it to x to be squared:

x term: -14x; coefficient = -14, half this is -7 (note the negative sign).

Add -7 to x and square: (x - 7)2 = x2 - 14x + 49

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Q: What number must be added to the polynomial to complete the square x2-14x?
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