w(w+2)=7

Simple and best practice solution for w(w+2)=7 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(w+2)=7 equation:


Simplifying
w(w + 2) = 7

Reorder the terms:
w(2 + w) = 7
(2 * w + w * w) = 7
(2w + w2) = 7

Solving
2w + w2 = 7

Solving for variable 'w'.

Reorder the terms:
-7 + 2w + w2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + 2w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + 2w + 7 + w2 = 0 + 7

Reorder the terms:
-7 + 7 + 2w + w2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 2w + w2 = 0 + 7
2w + w2 = 0 + 7

Combine like terms: 0 + 7 = 7
2w + w2 = 7

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 = 7 + 1

Reorder the terms:
1 + 2w + w2 = 7 + 1

Combine like terms: 7 + 1 = 8
1 + 2w + w2 = 8

Factor a perfect square on the left side:
(w + 1)(w + 1) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(w + 1) equal to 2.828427125 and -2.828427125.

Subproblem 1

w + 1 = 2.828427125 Simplifying w + 1 = 2.828427125 Reorder the terms: 1 + w = 2.828427125 Solving 1 + w = 2.828427125 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 = 2.828427125 + -1 Combine like terms: 1 + -1 = 0 0 + w = 2.828427125 + -1 w = 2.828427125 + -1 Combine like terms: 2.828427125 + -1 = 1.828427125 w = 1.828427125 Simplifying w = 1.828427125

Subproblem 2

w + 1 = -2.828427125 Simplifying w + 1 = -2.828427125 Reorder the terms: 1 + w = -2.828427125 Solving 1 + w = -2.828427125 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 = -2.828427125 + -1 Combine like terms: 1 + -1 = 0 0 + w = -2.828427125 + -1 w = -2.828427125 + -1 Combine like terms: -2.828427125 + -1 = -3.828427125 w = -3.828427125 Simplifying w = -3.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.828427125, -3.828427125}

See similar equations:

| 3k-12+6=2 | | x^3-3x^2+25x-75=0 | | 32+5x-4.9x^2=0 | | 5x-9-3x=4 | | -2x^3+18x^2-36x=0 | | 1.4x-4.2+0.4x-0.2=0.1 | | 1.4x-4.2+04x-0.2=0.1 | | 145x+5y=0 | | 3/8*2/5 | | 17-(-5)(4)-2= | | 6x-6=7x-7 | | 1/7x^3/4 | | 1.4x-4.2+0.4-0.2=0.1 | | q-3=2 | | 48x+2y=0 | | 4x-12-2x-15=-2 | | 2.8=(x/.17-x) | | b7/b3 | | 6/82/6 | | / | | Ln(x+1)(x-1)=0 | | x+(x-9)+4x=87 | | 23=12 | | (-2/5)*(-5/3) | | 48=2x*3x*1/2 | | -7+4y-y-5= | | (2a-3)/3=-1/2 | | 9h-12h=54-23 | | 5x+6=3(1+x) | | 4u+7=5 | | 5/6h-7/12=90-3/4h-13/6 | | 32+5x+4.9x^2=0 |

Equations solver categories