-2y-5+2y^2=0

Simple and best practice solution for -2y-5+2y^2=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -2y-5+2y^2=0 equation:


Simplifying
-2y + -5 + 2y2 = 0

Reorder the terms:
-5 + -2y + 2y2 = 0

Solving
-5 + -2y + 2y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-2.5 + -1y + y2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -1y + 2.5 + y2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -1y + y2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -1y + y2 = 0 + 2.5
-1y + y2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-1y + y2 = 2.5

The y term is -1y.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1y + 0.25 + y2 = 2.5 + 0.25

Reorder the terms:
0.25 + -1y + y2 = 2.5 + 0.25

Combine like terms: 2.5 + 0.25 = 2.75
0.25 + -1y + y2 = 2.75

Factor a perfect square on the left side:
(y + -0.5)(y + -0.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(y + -0.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

y + -0.5 = 1.658312395 Simplifying y + -0.5 = 1.658312395 Reorder the terms: -0.5 + y = 1.658312395 Solving -0.5 + y = 1.658312395 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + y = 1.658312395 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + y = 1.658312395 + 0.5 y = 1.658312395 + 0.5 Combine like terms: 1.658312395 + 0.5 = 2.158312395 y = 2.158312395 Simplifying y = 2.158312395

Subproblem 2

y + -0.5 = -1.658312395 Simplifying y + -0.5 = -1.658312395 Reorder the terms: -0.5 + y = -1.658312395 Solving -0.5 + y = -1.658312395 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + y = -1.658312395 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + y = -1.658312395 + 0.5 y = -1.658312395 + 0.5 Combine like terms: -1.658312395 + 0.5 = -1.158312395 y = -1.158312395 Simplifying y = -1.158312395

Solution

The solution to the problem is based on the solutions from the subproblems. y = {2.158312395, -1.158312395}

See similar equations:

| 8x+6(1+5x)= | | 4-2(2w-3)=6w-90 | | -6-4=-7a-5 | | 5/2x=(x-5) | | y=3sinx+2cosx | | a+a+5.80+0.5(5.80+a)+3(0.5(5.80+a))=246.20 | | 5+3(n+1)=2n | | 5z^2(z^2+2)=24-16z^2 | | -6x+10=15-6x | | 3x(2+3y)= | | 5-4(10+8m)=39+5m | | (5x)/(3iy)=5-6i | | x(x+3)-6(x+3)=0 | | (y-x)(y+11x)=a^2-b^2 | | c+8+2c=-10 | | -60=-6+6a | | (y-x)(y+11x)=y^2-x^2 | | -0.151-0.008n=4.1 | | 3y-9+3-4y=y+y-18 | | -0.151=-0.008x+4.15 | | 8.3x-3.1(x-4)=-29.04 | | X=0.75+0.35 | | (x-5)(4x-9)=0 | | 5+1.5(d-1)=0.5 | | n^2+4n-10=0 | | 12m=20m+80 | | 3-4(x-2)=8x(2x-1) | | 4(x-3)+8=4(2x-6) | | (x+2)-(59-x)= | | 5-4a=a-13+-1a | | p=36inches | | (x+2)+(59-x)= |

Equations solver categories