me ajudem -x²+12x-20=0
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-x^2+12x-20=0
delta=b^2-4ac
delta=12^2-4.(-1).(-20)
delta=144-80
delta=64
x=-b-/+ raiz de delta/2a
x=-12-8/2.(-1)
x=-20/-2
x=10
x=-12+8/2.(-1)
x=-4/-2
x=2
delta=b^2-4ac
delta=12^2-4.(-1).(-20)
delta=144-80
delta=64
x=-b-/+ raiz de delta/2a
x=-12-8/2.(-1)
x=-20/-2
x=10
x=-12+8/2.(-1)
x=-4/-2
x=2
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