-y^2+2y+23=0

Simple and best practice solution for -y^2+2y+23=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 -y^2+2y+23=0 equation:


Simplifying
-1y2 + 2y + 23 = 0

Reorder the terms:
23 + 2y + -1y2 = 0

Solving
23 + 2y + -1y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-23 + -2y + y2 = 0

Move the constant term to the right:

Add '23' to each side of the equation.
-23 + -2y + 23 + y2 = 0 + 23

Reorder the terms:
-23 + 23 + -2y + y2 = 0 + 23

Combine like terms: -23 + 23 = 0
0 + -2y + y2 = 0 + 23
-2y + y2 = 0 + 23

Combine like terms: 0 + 23 = 23
-2y + y2 = 23

The y term is -2y.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2y + 1 + y2 = 23 + 1

Reorder the terms:
1 + -2y + y2 = 23 + 1

Combine like terms: 23 + 1 = 24
1 + -2y + y2 = 24

Factor a perfect square on the left side:
(y + -1)(y + -1) = 24

Calculate the square root of the right side: 4.898979486

Break this problem into two subproblems by setting 
(y + -1) equal to 4.898979486 and -4.898979486.

Subproblem 1

y + -1 = 4.898979486 Simplifying y + -1 = 4.898979486 Reorder the terms: -1 + y = 4.898979486 Solving -1 + y = 4.898979486 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = 4.898979486 + 1 Combine like terms: -1 + 1 = 0 0 + y = 4.898979486 + 1 y = 4.898979486 + 1 Combine like terms: 4.898979486 + 1 = 5.898979486 y = 5.898979486 Simplifying y = 5.898979486

Subproblem 2

y + -1 = -4.898979486 Simplifying y + -1 = -4.898979486 Reorder the terms: -1 + y = -4.898979486 Solving -1 + y = -4.898979486 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + y = -4.898979486 + 1 Combine like terms: -1 + 1 = 0 0 + y = -4.898979486 + 1 y = -4.898979486 + 1 Combine like terms: -4.898979486 + 1 = -3.898979486 y = -3.898979486 Simplifying y = -3.898979486

Solution

The solution to the problem is based on the solutions from the subproblems. y = {5.898979486, -3.898979486}

See similar equations:

| 9x+3=3x+9 | | 4u-3(u-7)=3(u+11)+3(u+9)-2u | | 5+4x=9+3x | | 4(z-5)+5=-9(z+3)+z | | y+15=4y-6 | | 9x-7y=13 | | 15x^2-31x+14=0 | | 2(w+17)+5w-1=2(w+2)+3(w+5) | | 3p+7p-34=5p+11 | | x^2-0.66x-1.32=0 | | 3f-12=3(f-13) | | 3(r+5)+2(r-2)=2(r-9)-1 | | 8(s+1)+4s+6=6(s+3)+2 | | 5x^2-8=0 | | 2(5y-2)-22=11y-(3y+6) | | 32x^2-7x-12=0 | | 15x+3=7x-3 | | -24x^2+10x+56=0 | | 2-5(n+3)=-28 | | (2x-3)-x=15-(x+4) | | 18x^2+13x-21=0 | | 4x^6-19x^4+17x^3= | | 2x+y=19 | | 17x-23=32+48 | | -4x-2y=20 | | a-5=3(a+1) | | 2x+2y=10 | | x-3y=1 | | 3x-2y=-8 | | x(5x+18)=8 | | x^2-49=48x | | -4x-3y=5 |

Equations solver categories