5w^2-2w=4

Simple and best practice solution for 5w^2-2w=4 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 5w^2-2w=4 equation:


Simplifying
5w2 + -2w = 4

Reorder the terms:
-2w + 5w2 = 4

Solving
-2w + 5w2 = 4

Solving for variable 'w'.

Reorder the terms:
-4 + -2w + 5w2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -2w + 5w2 = 0

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

Divide each side by '5'.
-0.8 + -0.4w + w2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + -0.4w + 0.8 + w2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + -0.4w + w2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + -0.4w + w2 = 0 + 0.8
-0.4w + w2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
-0.4w + w2 = 0.8

The w term is -0.4w.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4w + 0.04 + w2 = 0.8 + 0.04

Reorder the terms:
0.04 + -0.4w + w2 = 0.8 + 0.04

Combine like terms: 0.8 + 0.04 = 0.84
0.04 + -0.4w + w2 = 0.84

Factor a perfect square on the left side:
(w + -0.2)(w + -0.2) = 0.84

Calculate the square root of the right side: 0.916515139

Break this problem into two subproblems by setting 
(w + -0.2) equal to 0.916515139 and -0.916515139.

Subproblem 1

w + -0.2 = 0.916515139 Simplifying w + -0.2 = 0.916515139 Reorder the terms: -0.2 + w = 0.916515139 Solving -0.2 + w = 0.916515139 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + w = 0.916515139 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + w = 0.916515139 + 0.2 w = 0.916515139 + 0.2 Combine like terms: 0.916515139 + 0.2 = 1.116515139 w = 1.116515139 Simplifying w = 1.116515139

Subproblem 2

w + -0.2 = -0.916515139 Simplifying w + -0.2 = -0.916515139 Reorder the terms: -0.2 + w = -0.916515139 Solving -0.2 + w = -0.916515139 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + w = -0.916515139 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + w = -0.916515139 + 0.2 w = -0.916515139 + 0.2 Combine like terms: -0.916515139 + 0.2 = -0.716515139 w = -0.716515139 Simplifying w = -0.716515139

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.116515139, -0.716515139}

See similar equations:

| 3x+3=-33+7x | | 16(3x-7)=4(12x+3) | | X+10+5x=-56 | | 76-20r=-24 | | 2x^3-13x^2+24x-9=0 | | 2.3y+7=17 | | -2y=6x+10 | | 10x-5y=50findy | | 3+2x+5x=11 | | x^2+8v=3 | | 6+2m-3=9m+5-6m | | 4m^3(2m^2)= | | 6x+5=5+7x | | 4t+9=-7t-13 | | 12+4y=4 | | 6x+8+x=8 | | 5+3x=7x-39 | | 8w+11+5w=-22 | | 3-5x=20x+12 | | 6=5-2b+1 | | -9+x+7x=23 | | 9n-7=w-15 | | 68=9x+2x+5 | | 10x+30(x-4)=280 | | 3x+4=1+4x | | -4x-1+5x=10 | | 3+15=3(x+5) | | 0.3(y-7)=2y+6 | | 10x-(-14x)=16x+50 | | 2(4x-4)-8=4+3x | | 3a+34=-2 | | 13=-2x+5x+1 |

Equations solver categories