Question

encontre as raizes do 2°grau incompletas 2x²-18=0

Answer 1

2x²-18=0
2x²=18
x²=18:2
x²=9
x=+-raiz quadrado de 9
x=+-3

Answer 2

2x²-18=0
2x² = 18
x² = 18/2
x² = 9
x = ±√9
x = ± 3



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