Question

resolva as equações incompletas do 2°(segundo) grau:
9x² = 0


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Answer 1

x (9x) = 0

x= 0

9x= 0

x= 0

Answer 2

$9 {x}^{2} = 0(a = 9.b = 0.c = 0) \\ \\ delta = {b}^{2} - 4.a.c \\ d = {0}^{2} - 4 \times 9 \times 0 \\ d = 0 \\ \\ x = - b + | - \sqrt{d} |2.a \\ x = - 0 + | - \sqrt{0} |2 \times 9 \\ \\ x ^{.} = - 0 - 0 \div 18 \\ x ^{.} = 0 \\ \\ {x}^{..} = - 0 + 0 \div 18 \\ {x}^{..} = 0$