Find all values of y that satisfy the equation y3+1=y+3y.
So far I got y=3, but apparently there's more than one solution. Could someone help me with the other one?
Let us write this in a slightly different manner noting that y/y = 1 and y not equal to 0
y / 3 + y / y = (y + 3) / y
Now
y / 3 = (y + 3) / y - y/y
y / 3 = ( y + 3 - y) / y
y / 3 = 3 / y cross-multiply
y^2 = 9 take both roots
y = +3 or -3
Hope that helps !!!
Ohh that was helpful. Thank you!
+1306 
