Question

Me lo resuelven porfa rapido

Answer 1

Respuesta:

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C)

$r^{3} -9=55\\\\r^{3} =64\\\\r=\sqrt[3]{64} \\\\r=4$

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D)

$3x^{2} +2=14\\\\3x^{2} =12\\\\x^{2} =4\\\\x=\sqrt[]{4}$

$x=2$  ∨  $x=-2$

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E)

$(3v+1)^{2} =49$

$3v+1=\sqrt{49}$

$3v+1=|7|$

$3v+1=7$   ∨   $3v+1=-7$

$3v=6$         ∨   $3v=-8$

$v=2$           ∨   $v=-8/3$

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F)

$\sqrt{\frac{x+2}{5} }=3\\\\ \frac{x+2}{5}=3^{2} \\\\\frac{x+2}{5}=9\\\\x+2=45\\\\x=43$

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G)

$\sqrt{x+4} =7\\\\x+4=7^{2} \\\\x+4=49\\\\x=45$

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H)

$f^{5} -1=31\\\\f^{5} =32\\\\f=\sqrt[5]{32} \\\\f=2$

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