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What number must you add to complete the square x2 plus 8x equals 34?
Wiki User
∙ 13y ago
Find out.
X^2 + 8X = 34
halve the linear term, square it and add to both sides
X^2 + 8X + 16 = 34 + 16
factor left, gather right
(X + 4)^2 = 50
(X + 4)^2 - 50 = 0
(- 4, - 50) is the vertex
and I guess you added 16 to both sides to complete square
Wiki User
∙ 13y ago
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