Question

calcule o valor da expressão :

Answer 1

Resposta:

$\sqrt[4]{81} - \sqrt{400} + \sqrt[5]{32} = \sqrt[4]{9 \times 9} - \sqrt{20 \times 20} + \sqrt[5]{16 \times 2} =$

$\sqrt[4]{3^{2} \times 3^{2} } - \sqrt{20 \times 20} + \sqrt[5]{4^{2} \times 2} =$

$3 - 20 + 2 = - 15$

Answer 2

$\mathsf{81=3^4}$

$\mathsf{400=2^2\cdot2^2\cdot5^2}$

$\mathsf{32=2^5}$

• $\mathsf{\sqrt[4]{81}-\sqrt{400}+\sqrt[5]{32}}\\\mathsf{\sqrt[4]{3^4}-\sqrt{2^2\cdot2^2\cdot5^2}+\sqrt[5]{2^5}}\\\mathsf{3-2\cdot2\cdot5+2}\\\mathsf{3-20+2}\\\boxed{\boxed{\boxed{\boxed{\mathsf{\sqrt[4]{81}-\sqrt{400}+\sqrt[5]{32}=-15}}}}}$