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How do you complete the square of the math problem x2 plus 2x equals 19?
Updated: 10/18/2022
Wiki User
∙ 13y agoBest Answer
X^2 + 2X = 19
divide the linear coefficient ( 2X; the 2 ) in half, square and add to both sides.
X^2 + 2X + 1 = 19 + 1
You see the perfect square on the left side?
( X + 1 )^2 = 20
( X + 1 )^2 - 20 = 0
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∙ 13y agoThis answer is:
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