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18salles
@18salles
October 2019
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A) X²-6x=0
b) 3x² -18=0
c) X²/3 -3=
d) 2x²+3x=0
Equação de 2° grau
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fourier
A) x²-6x=0, fatorando: x(x-6)=0, x=6, x=0
b)3x²-18=0 ⇒ 3x²=18 ⇒ 3x²=6 ⇒ x=+√6, x=-√6
c)(x²/3) - 3 ⇒ x²/3 = 3 ⇒ x²=9 ⇒ x=+-3
d)2x²+3x=0, fatorando; x(2x+3)=0 2x=-3 ⇒ x=-3/2, x=0
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b)3x²-18=0 ⇒ 3x²=18 ⇒ 3x²=6 ⇒ x=+√6, x=-√6
c)(x²/3) - 3 ⇒ x²/3 = 3 ⇒ x²=9 ⇒ x=+-3
d)2x²+3x=0, fatorando; x(2x+3)=0 2x=-3 ⇒ x=-3/2, x=0