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Conrocha
@Conrocha
April 2020
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Por favor resolvam as questoes.
a)9^-1.9^1
b)4^-1.4^-2.4^-3
c)a^n.a-m.a^p
d)x^5.1/x^3.x^4.1/x
e)1/a^2.a^3
f)x^-2.x^3.x^-1
g)3^4.1/3^-2.3^-4.3
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brumendes
a)
9^-1.9^1 (mesma base, apenas some os expoentes e mantenha a base) -1 + 1 = 0
9^0
= 1
b)4^-1.4^-2.4^-3 (mesma regra) -1 -2 -3 = -6
= 4^-6
c)a^n.a^-m.a^p (mesma regra) n- m + p
= a^n- m + p
d)
x^5.1/x^3.x^4.1/x (mesma regra)
x^5. x^-3. x^4 . x^-1 ---------- 5 - 3 + 4 - 1 = 5
= x^5
e)
1/a^2.a^3 (mesma regra)
a^-2.a^3 ------------ -2+3 = 1
= a
f)
x^-2.x^3.x^-1 (mesma regra) -2 + 3 - 1 = 0
x^0
= 1
g)
3^4.1/3^-2.3^-4.3 (mesma regra)
3^4. 3^2. 3^-4. 3^1 ------------- 4 + 2 - 4 + 1 = 3
3^3
= 27
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Lista de comentários
a)9^-1.9^1 (mesma base, apenas some os expoentes e mantenha a base) -1 + 1 = 0
9^0
= 1
b)4^-1.4^-2.4^-3 (mesma regra) -1 -2 -3 = -6
= 4^-6
c)a^n.a^-m.a^p (mesma regra) n- m + p
= a^n- m + p
d)x^5.1/x^3.x^4.1/x (mesma regra)
x^5. x^-3. x^4 . x^-1 ---------- 5 - 3 + 4 - 1 = 5
= x^5
e)1/a^2.a^3 (mesma regra)
a^-2.a^3 ------------ -2+3 = 1
= a
f) x^-2.x^3.x^-1 (mesma regra) -2 + 3 - 1 = 0
x^0
= 1
g)3^4.1/3^-2.3^-4.3 (mesma regra)
3^4. 3^2. 3^-4. 3^1 ------------- 4 + 2 - 4 + 1 = 3
3^3
= 27