racionalize os denominadores abaixo:
a) 5/√7=
b) 2√2/3√6
c) 4/³√7
d) 2/1+√3
e) √2/√6-√2
Soluções para a tarefa
a) 5 = 5√7 = 5√7 = 5√7
√7 √7√7 √7² 7
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b) 2√2 = 2√2.√6 = 2√12 = 2√2².3 ==> 2.2√3 ==> 4√2 ==> 2√3
3√6 3√6√6 3√6² 3.6 18 18 9
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c) 4 = 4 ³√7² = 4³√7² = 4 ³√7² ==> 4 ³√49
³√7 ³√7 ³√7² ³√7.7² ³√7³ 7
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d) 2 = 2(1-√3) ==> 2(1-√3) ==> 2(1-√3)==> 2(1-√3) ==> - 1+√3
1+√3 (1+√3)(1-√3) 1² - (√3)² 1 - 3 - 2
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e) √2 = 2(√6-√2) =>2(√6-√2)=>2(√6-√2) =>2(√6-√2) ==> (√6-√2)
√6-√2 (√6-√2)(√6+√2) √6²-√2²) 6-2 4 2
Resposta:
Explicação passo-a-passo:
a) 5 = 5√7 = 5√7 = 5√7
√7 √7√7 √7² 7
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b) 2√2 = 2√2.√6 = 2√12 = 2√2².3 ==> 2.2√3 ==> 4√2 ==> 2√3
3√6 3√6√6 3√6² 3.6 18 18 9
=======================================================
c) 4 = 4 ³√7² = 4³√7² = 4 ³√7² ==> 4 ³√49
³√7 ³√7 ³√7² ³√7.7² ³√7³ 7
==================================================
d) 2 = 2(1-√3) ==> 2(1-√3) ==> 2(1-√3)==> 2(1-√3) ==> - 1+√3
1+√3 (1+√3)(1-√3) 1² - (√3)² 1 - 3 - 2
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e) √2 = 2(√6-√2) =>2(√6-√2)=>2(√6-√2) =>2(√6-√2) ==> (√6-√2)
√6-√2 (√6-√2)(√6+√2) √6²-√2²) 6-2 4 2