Question

sendo x=2 elevado a 8 vezes 5 elevado a 2, calcule a raiz quadrada de x.

Answer 1

Olá!

$2^{8} =2.2.2.2.2.2.2.2=256 \\ 5^{2} =5.5=25 \\ x=256.25 \\ x=6400 \\ \\ x= \sqrt{6400} \\ x=+ou-80$

BONS ESTUDOS!

Answer 2

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$x= \sqrt{2^8.5^2} \\ \\ x=\pm(2^4.5) \\ \\ x=\pm(16.5) \\ \\ x=\pm80$