Ответ:
y² - 16 = 0
y² = 16
y = √16
y1 = 4
y2=-4
4+(-4)=0
4-(-4)=4+4=8
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Ответ:
y² - 16 = 0
y² = 16
y = √16
y1 = 4
y2=-4
4+(-4)=0
4-(-4)=4+4=8