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Natanaelsantos726
@Natanaelsantos726
December 2019
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ME AJUDEM AE POR FAVOR (passo a passo)
f(x)=-x² +7x-10
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JonathanYussef
-x² +7x-10 vamos usar o baskhara para achar as raizes
Δ=b²-4ac
Δ=7²-4.(-1).(-10)
Δ=49-40
Δ=9 achamos o delta,agora vamos achar as raizes:
x=-b+-√Δ/2a
x=-7+-√9/2.(-1)
X1=-7+3/-2=
-2
X2=-7-3/-2=5
1 votes
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Δ=b²-4ac
Δ=7²-4.(-1).(-10)
Δ=49-40
Δ=9 achamos o delta,agora vamos achar as raizes:
x=-b+-√Δ/2a
x=-7+-√9/2.(-1)
X1=-7+3/-2=-2
X2=-7-3/-2=5