Explicación paso a paso:
La fórmula a²+2ab+b²
X=a
-2=b
a²+2(x)(-2)+(-2)²
Rpta = a²-4x+4
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Explicación paso a paso:
La fórmula a²+2ab+b²
X=a
-2=b
a²+2(x)(-2)+(-2)²
Rpta = a²-4x+4