SOLUTION: Please solve this equation for me: {{{ sqrt( y+2 )=y }}}
Algebra.Com
Question 516050: Please solve this equation for me:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
square both sides
y + 2 = y^2
Arrange as a quadratic equation
0 = y^2 - y - 2
Factors to:
(y-2)(y+1) = 0
two solutions
y = 2
y = -1
:
Check both solutions in the original problem
y=2
; this works
y=-1
this does not work, only y=2 is a solutions
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