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  • 02-02-2017
  • Mathematics
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Solving quadratics equations by taking square root

Solving quadratics equations by taking square root class=

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Аноним Аноним
  • 02-02-2017
#6
x^2 = 1
x = - 1 and x = + 1

#7
a^2 + 1 = 19
a^2 =18
a^2 =√ 9 √ 2
a = + 3√ 2 and a = - 3√ 2
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