w^2+2w-56=0

Simple and best practice solution for w^2+2w-56=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 w^2+2w-56=0 equation:


Simplifying
w2 + 2w + -56 = 0

Reorder the terms:
-56 + 2w + w2 = 0

Solving
-56 + 2w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + 2w + 56 + w2 = 0 + 56

Reorder the terms:
-56 + 56 + 2w + w2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + 2w + w2 = 0 + 56
2w + w2 = 0 + 56

Combine like terms: 0 + 56 = 56
2w + w2 = 56

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 = 56 + 1

Reorder the terms:
1 + 2w + w2 = 56 + 1

Combine like terms: 56 + 1 = 57
1 + 2w + w2 = 57

Factor a perfect square on the left side:
(w + 1)(w + 1) = 57

Calculate the square root of the right side: 7.549834435

Break this problem into two subproblems by setting 
(w + 1) equal to 7.549834435 and -7.549834435.

Subproblem 1

w + 1 = 7.549834435 Simplifying w + 1 = 7.549834435 Reorder the terms: 1 + w = 7.549834435 Solving 1 + w = 7.549834435 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 = 7.549834435 + -1 Combine like terms: 1 + -1 = 0 0 + w = 7.549834435 + -1 w = 7.549834435 + -1 Combine like terms: 7.549834435 + -1 = 6.549834435 w = 6.549834435 Simplifying w = 6.549834435

Subproblem 2

w + 1 = -7.549834435 Simplifying w + 1 = -7.549834435 Reorder the terms: 1 + w = -7.549834435 Solving 1 + w = -7.549834435 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 = -7.549834435 + -1 Combine like terms: 1 + -1 = 0 0 + w = -7.549834435 + -1 w = -7.549834435 + -1 Combine like terms: -7.549834435 + -1 = -8.549834435 w = -8.549834435 Simplifying w = -8.549834435

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.549834435, -8.549834435}

See similar equations:

| 15-3c=3 | | a^4+8a^3b-9a^2b^2= | | 8z^2+40z-az-5a= | | 8z^2+40z-az-5a=0 | | (x+1)=25 | | (2w-3)+(6w+5)= | | 5x+7b-c=6 | | 2x-2=-30 | | 4x-4-5x=-6+90+4 | | 0.22y-1.7=0.12y+1-0.8y | | 3a+4=1 | | 3u^2-144+5=32 | | 17x+-12=144+3x | | 4x^2-15x-4=0 | | 16x=164 | | 2x+2y=-34 | | 5x+4y=10.25 | | 4x-(2-2x)+15=55 | | 9x+2=-79 | | 4x+3y=6.75 | | t^2-15t+56= | | 19x-4=17x+4 | | 78x-768=45x+45 | | r^2+4r-12= | | 20D+2=12 | | 4x+12=27 | | a(a-9)(2a+1)=0 | | 8z+8=5z-2 | | x^2+7x-55=0 | | 8z+8=9z+6 | | -4x^2-7x=0 | | 98+x+x+88=180 |

Equations solver categories