y2+0y-1=0
Multiply 0 by y.
y2+0-1=0
Add y2 and 0.
y2-1=0
y2-1=0
Add 1 to both sides of the equation.
y2=1
Take the square root of both sides of the equation to eliminate the exponent on the left side.
y=±1
Any root of 1 is 1.
y=±1
The complete solution is the result of both the positive and negative portions of the solution.
First, use the positive value of the ± to find the first solution.
y=1
Next, use the negative value of the ± to find the second solution.
y=-1
The complete solution is the result of both the positive and negative portions of the solution.
y=1,-1
y=1,-1
y=1,-1
Solve for y y^2+0y-1=0