Move all terms containing y to the left side of the equation.
Subtract 4y2 from both sides of the equation.
Subtract 4y2 from 5y2.
Move 1 to the left side of the equation by adding it to both sides.
Factor using the perfect square rule.
Rewrite 1 as 12.
Check the middle term by multiplying 2ab and compare this result with the middle term in the original expression.
Factor using the perfect square trinomial rule a2+2ab+b2=(a+b)2, where a=y and b=1.
Set the y+1 equal to 0.
Subtract 1 from both sides of the equation.
Solve for y 5y^2+2y=4y^2-1