10x² – 40 = 0
10x² = 40
x² = 4
x = ±√4
x = ±2
Ответ:
10x²–40=0
10(х²-4) = 0
х²-4 = 0
х² = 4
х = 2
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10x² – 40 = 0
10x² = 40
x² = 4
x = ±√4
x = ±2
Ответ:
10x²–40=0
10(х²-4) = 0
х²-4 = 0
х² = 4
х = 2