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X²+3x-10=0
a=1 b=3 c=-10
Delta= b²-4ac
D= 3²-4×1×-10
D= 9+40= 49
X= -b+/- raiz delta / 2×a
X= -3 +/- raiz de 49 / 2×1
X= -3 +/- 7 / 2
X1= -3+7/2
4/2 = 2
X2= -3-7/2
-10/2= -5
a=1 b=3 c=-10
Delta= b²-4ac
D= 3²-4×1×-10
D= 9+40= 49
X= -b+/- raiz delta / 2×a
X= -3 +/- raiz de 49 / 2×1
X= -3 +/- 7 / 2
X1= -3+7/2
4/2 = 2
X2= -3-7/2
-10/2= -5
x²-4x+3=0
a=1 b=-4 c=3
D= (-4)² -4 ×1 ×3
D= 16- 12
D= 4
X= -(-4)+/- raiz de 4 / 2×1
X= 4+/- 2 / 2
X1 = 4+2/2 = 6/2 = 3
X2= 4-2/2 = 2/2 = 1
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