alyson413 alyson413
  • 02-02-2017
  • Mathematics
contestada

solve for y. x-4=y^2

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bcalle
bcalle bcalle
  • 02-02-2017
x - 4 = y^2
Since you want y to the first power you have to take the square root of y^2.
If you take the square root of the right side you also must take the square root of the left side.
+ - sqrt (x-4) = y
y = sqrt (x - 4)
and y = - sqrt (x - 4)
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