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teagan4christ
teagan4christ teagan4christ
  • 08-02-2017
  • Mathematics
Answered

solve for x.

5x to the second power -80=0

A{16}
B{4}
C{4 , -4}
D{16 , -16}

Verified Answer :

texaschic101
texaschic101 texaschic101
  • 08-02-2017

5x^2 - 80 = 0
5x^2 = 80
x^2 = 80/5
x^2 = 16
x = sqrt 16
x = (4,-4) <===

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