1 Answer

Jaritza · Answer 1 · 2024-10-21T12:14:35+0000

To make X^2+12x a perfect square, divide the coefficient of x by 2 and the add the square of the result to make this a perfect square.
Hence
12/2=6 and 6^2=36

⇒
We should add 36 to make x^2+12x a perfect square.

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