w^2+2w=1

Simple and best practice solution for w^2+2w=1 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 w^2+2w=1 equation:


Simplifying
w2 + 2w = 1

Reorder the terms:
2w + w2 = 1

Solving
2w + w2 = 1

Solving for variable 'w'.

Reorder the terms:
-1 + 2w + w2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 2w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 2w + 1 + w2 = 0 + 1

Reorder the terms:
-1 + 1 + 2w + w2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2w + w2 = 0 + 1
2w + w2 = 0 + 1

Combine like terms: 0 + 1 = 1
2w + w2 = 1

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

Add '1' to each side of the equation.
2w + 1 + w2 = 1 + 1

Reorder the terms:
1 + 2w + w2 = 1 + 1

Combine like terms: 1 + 1 = 2
1 + 2w + w2 = 2

Factor a perfect square on the left side:
(w + 1)(w + 1) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(w + 1) equal to 1.414213562 and -1.414213562.

Subproblem 1

w + 1 = 1.414213562 Simplifying w + 1 = 1.414213562 Reorder the terms: 1 + w = 1.414213562 Solving 1 + w = 1.414213562 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + w = 1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + w = 1.414213562 + -1 w = 1.414213562 + -1 Combine like terms: 1.414213562 + -1 = 0.414213562 w = 0.414213562 Simplifying w = 0.414213562

Subproblem 2

w + 1 = -1.414213562 Simplifying w + 1 = -1.414213562 Reorder the terms: 1 + w = -1.414213562 Solving 1 + w = -1.414213562 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + w = -1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + w = -1.414213562 + -1 w = -1.414213562 + -1 Combine like terms: -1.414213562 + -1 = -2.414213562 w = -2.414213562 Simplifying w = -2.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.414213562, -2.414213562}

See similar equations:

| 5y(6y-7)(4y+7)=0 | | (5y^2/3)(12/20y) | | 4+3+2x=36 | | 2*40-6=x | | 6-x-3=2x-6 | | g(x)=ln(x^2-12x+5) | | 5lb(2x)=20 | | (5y+1)(7y+2)=0 | | (-2x^2y)(-5x^5y^3)= | | 2x^2+7x-10+x+5= | | -1/3×4/3 | | 7n-25=10 | | 60+15= | | -(8y+6)-(-7y-4)=7 | | 5w^4-405=0 | | 1+cos(10x)=2cos^2(5x) | | -(8y+6)-(-7-4)=7 | | 2+3x+2=40 | | 2x-2x+9=-2x+18 | | 5(x-3)=5x+5 | | (-3i+8)-(-7i-5)= | | 14+x=2x-40 | | 14+x=40-2x | | x^2+4y^2-2x-16y+18=0 | | x-19+x=153 | | 2(2y-6)+2y=228 | | -16x=-16 | | 5a/-4=16 | | 2x^3+9x^2-60x+4=0 | | -6v-24=-3(2v+8) | | 3-x-1=9 | | -4y+16=2(4y-4) |

Equations solver categories