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8MaryS2
@8MaryS2
December 2019
1
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Resolva a equação a seguir 25ˣ - 26.5ˣ + 25 = 0
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(5²)
-26.5
+25=0
(
)²-26.
-25=0
=y
y²-26y+25=0
Δ=676-100=576
y=(26+-√576)/2
y=(26+-24)/2
y'=25→y=
→
=5²→x'=2
y"=1→y=
→
=5
→x=0
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()²-26.-25=0
=y
y²-26y+25=0
Δ=676-100=576
y=(26+-√576)/2
y=(26+-24)/2
y'=25→y=→=5²→x'=2
y"=1→y=→=5→x=0