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03-07-2018
Mathematics

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what number should be added to the expression x^2 + 6x to change it into a perfect square trinomal

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03-07-2018

Hello.

The correct is answer is 9.

You have to do half of 6 (3) and then square it that equals 9

So it should be x^2 + 6x +9

Have a nice day

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