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What number must you add to complete the square x2 plus 26x equals 68?
Wiki User
∙ 12y ago
x2+26x = 68
x2+26x-68 = 0
(x+13)2-68 = 0
(x+13)2-169-68 = 0
x+13 = +/- the square root of 237
x = -13 +/- the square root of 237
Wiki User
∙ 12y ago
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