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JackieMadness
JackieMadness JackieMadness
  • 02-03-2016
  • Mathematics
Answered

Solve the equation. x^2 = 160


A \(\frac{+}{}\) 16 \({ \sqrt{10} }
\)



B \(\frac{+}{} 4 \sqrt{10}\)



C 14



D -14, 14

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 02-03-2016

square root both sides and don't forget to get the positive and negative roots
x=+/-\(\sqrt{160}\)

\(\sqrt{160}\)=\(\sqrt{16}\) times \(\sqrt{10}\)

\(\sqrt{16}\)=+/-4
 
answer is
+/-4\(\sqrt{10}\)

answer is b




Answer Link
Exvited
Exvited Exvited
  • 02-03-2016

\(x^2 = 160 \\ \\ x = \pm \sqrt{160} \\ \\ x = \pm 4 \sqrt{10} \\ \\\)

The final result is: x = ±4 √10 or B.

Answer Link

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