Respuesta:
(x+3)²=x²-3
X²+6x+9 = x² - 3
X²+6x - x² = - 3-9
6x = - 12
X= - 12/6
X= - 2.
Comprobamos
(x+3)²=x²-3
(-2+3)²= (-2)²-3
1²= 4-3
1= 1
Saludos❤️
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Respuesta:
(x+3)²=x²-3
X²+6x+9 = x² - 3
X²+6x - x² = - 3-9
6x = - 12
X= - 12/6
X= - 2.
Comprobamos
(x+3)²=x²-3
(-2+3)²= (-2)²-3
1²= 4-3
1= 1
Saludos❤️