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Charmiris2010
@Charmiris2010
December 2019
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Resolva as equações do 2° em IR
a) x²- 8x=0
b) x² + 3x=0
c) 3x²-7x=0
d) x²+x=0
e) 5x²-x=0
f) 9x²=5x
g) 5x²-10x
h) -3x²+15x=0
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alcon
A)x^2-8x=0
x(x-8)=0
x=0
x-8=0》x=8
b)x^2+3x=0
x(x-3)=0
x=0
x-3=0》x=3
c)3x^2-7x=0
x(3x-7)=0
x=0
3x-7=0》3x=7》x=7/3
d)x^2+x=0
x(x+2)=0
x=0
x+2=0》x=-2
e)5x^2-x=0
x(5x-1)=0
x=0
5x-1=0》5x=1》x=1/5
f)9x^2=5x
9x^2-5x=0
x(9x-5)=0
x=0
9x-5=0》9x=5》x=5/9
g)5x^2-10x=9
5x(x-2)=0
5x=0》x=0/5》x=0
x-2=0》x=2
h)-3x^2+15x=0
-3x(x-5)=0
-3x=0》x=-0/3》x=0
x-5=0》x=5
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Report "Resolva as equações do 2° em IR a) x²- 8x=0 b) x² + 3x=0 c) 3x²-7x=0 d) x²+x=0 e) 5x²-x=0 f) 9x²=5x .... Pergunta de ideia de Charmiris2010"
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x(x-8)=0
x=0
x-8=0》x=8
b)x^2+3x=0
x(x-3)=0
x=0
x-3=0》x=3
c)3x^2-7x=0
x(3x-7)=0
x=0
3x-7=0》3x=7》x=7/3
d)x^2+x=0
x(x+2)=0
x=0
x+2=0》x=-2
e)5x^2-x=0
x(5x-1)=0
x=0
5x-1=0》5x=1》x=1/5
f)9x^2=5x
9x^2-5x=0
x(9x-5)=0
x=0
9x-5=0》9x=5》x=5/9
g)5x^2-10x=9
5x(x-2)=0
5x=0》x=0/5》x=0
x-2=0》x=2
h)-3x^2+15x=0
-3x(x-5)=0
-3x=0》x=-0/3》x=0
x-5=0》x=5