Efetue as divisões:
a) 3a a^5
--- . -----
8b 4b
b) 21xy 7y³
------- . -----
8ab 2ab²
c) 8x²y³ 4xy³
-------- . ------
ab^6 ab^8
d) a³b² x²y
------ . -----
xy³ a²b²
Soluções para a tarefa
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a)
_3a_÷_a^5_ = _3a_×_4b_ = _6b_ = _3b_
8b 4b 8b a^5 2a^4 a^4
b)
_21xy_÷_7y³_ = _21xy_×_2ab²_ = _3bx_
8ab 2ab² 8ab 7y³ 4y²
c)
_8x²y²_÷ _4xy³ = _8x²y²_×_ab^8_ = _2xb²_
ab^6 ab^8 ab^6 4xy³ y
d)
_a³b²_÷_x²y = _a³b²_×_a²b²_ = _a^5b^4_
xy³ a²b² xy³ x²y x³y^4
_3a_÷_a^5_ = _3a_×_4b_ = _6b_ = _3b_
8b 4b 8b a^5 2a^4 a^4
b)
_21xy_÷_7y³_ = _21xy_×_2ab²_ = _3bx_
8ab 2ab² 8ab 7y³ 4y²
c)
_8x²y²_÷ _4xy³ = _8x²y²_×_ab^8_ = _2xb²_
ab^6 ab^8 ab^6 4xy³ y
d)
_a³b²_÷_x²y = _a³b²_×_a²b²_ = _a^5b^4_
xy³ a²b² xy³ x²y x³y^4
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