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What number must you add to complete the square x2 plus 16x equals 3?
Chrissygrl
Half of the coefficient of x, squared.
For example: x2 + 16x -3 you would add 8^2.
Then you would have: x2 +16x +8^2 = 3-8^2
Which leads to: (x+8)^2 = -61
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∙ 13y ago
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What number must you add to complete the square x2 minus 4x equals 1?
4
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What number must you add to complete the square of x2 plus 12x equals 40?
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What number must be added to complete the square of x SQUARED plus 12x equals -3?
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-3
