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Mathematics 13 Online
OpenStudy (anonymous):

What number completes the square? x2 - 18x + ? A. 81 B. 64 C. 36 D. 324 C ?

OpenStudy (anonymous):

A.81

OpenStudy (anonymous):

81 a^2x^2 + 2abx + b^2 = (ax+b)^2

OpenStudy (anonymous):

x2-18x+? x2-2*9*x+(9)^2 x2-18x+81

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