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Help plz solve these equations by completing the square

x square + 12x =1

User DJDJ
by
8.2k points

1 Answer

8 votes

Answer:

x = - 6 ±
√(37)

Explanation:

Given

x² + 12x = 1

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(6)x + 36 = 1 + 36

(x + 6)² = 37 ( take the square root of both sides )

x + 6 = ±
√(37) ( subtract 6 from both sides )

x = - 6 ±
√(37) ← exact solutions

User David Heffernan
by
7.6k points

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