Question

urgente solo si van a rresponder bien doy corona

Answer 1

$Hola:)$

a) $\sqrt{8} - 5 \sqrt{2} +6\sqrt{128}$

• $\sqrt{8}-> \sqrt{2^2*2} = 2\sqrt{2}$
• $6\sqrt{128} ->6 \sqrt{8^2*2} =48\sqrt{2}$

$2\sqrt{2} -5\sqrt{2} +48\sqrt{2}$

agrupamos los términos semejantes.

$45\sqrt{2}$

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b) $-\sqrt{27} +2\sqrt{243} -\sqrt{2187}$

$-( \sqrt{27} +2\sqrt{243} -\sqrt{2187})$

$-(\sqrt{\sqrt{27} } - \sqrt{\sqrt{2187} } )^2$

$-(\sqrt[4]{27}-3\sqrt[4]{27})^2$

$-(-2\sqrt[4]{27})^2$

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c) $2\sqrt{20}- 7\sqrt{125} +2\sqrt{45}$

• $2\sqrt{20}-> 4\sqrt{5} \\7\sqrt{125} -> 35\sqrt{5}\\2\sqrt{45}-> 6\sqrt{5}$

agrupamos los términos semejantes.

$-25\sqrt{5}$