Baskara x (x-3) -2 (x-3) =
Formulas:
Δ = b^{2} - 4 .a.c
x = - b +/- √Δ
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2.a
Formulas:
Δ = b^{2} - 4 .a.c
x = - b +/- √Δ
------------
2.a
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x²-3x-2x+6=0
x²-5x+6=0 ---------- ax²-bx+c=0
a=1 b= -5 c= 6
x= -(-5)+/- √ (-5)²-4.(1).(6)=0
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2.(1)
x= 5+/- √25-24 =0
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2
x= 5+/- √1=0 √1= 1
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2
x= 5+1= 6 = 3 ou x= 5-1= 4 = 2
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2 2 2 2
x=3 ou x=2