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X^2+6x+? complete the square
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5 votes
X^2+6x+? complete the square

User Ingmars
by
7.6k points

1 Answer

6 votes

Answer:

+ 9

Explanation:

x²+ 6x

to complete the square

add ( half the coefficient of the x- term )² to x² + 6x

x² + 2(3)x + 3²

= x² + 6x + 9

= (x + 3)² ← a perfect square

User Oehmiche
by
7.2k points
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