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What number must you add to the polynomial below to complete the square? x^2-6x?

What number must you add to the polynomial below to complete the square? x^2-6x?
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2 votes
What number must you add to the polynomial below to complete the square? x^2-6x?

User Edward Strange
by
8.8k points

1 Answer

4 votes
You must add the square of half the x-coefficient.
(-3)² = 9
is the number you must add.
User ReaperUnreal
by
8.2k points
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