w^2+3w-8=0

Simple and best practice solution for w^2+3w-8=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+3w-8=0 equation:


Simplifying
w2 + 3w + -8 = 0

Reorder the terms:
-8 + 3w + w2 = 0

Solving
-8 + 3w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 3w + 8 + w2 = 0 + 8

Reorder the terms:
-8 + 8 + 3w + w2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 3w + w2 = 0 + 8
3w + w2 = 0 + 8

Combine like terms: 0 + 8 = 8
3w + w2 = 8

The w term is 3w.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3w + 2.25 + w2 = 8 + 2.25

Reorder the terms:
2.25 + 3w + w2 = 8 + 2.25

Combine like terms: 8 + 2.25 = 10.25
2.25 + 3w + w2 = 10.25

Factor a perfect square on the left side:
(w + 1.5)(w + 1.5) = 10.25

Calculate the square root of the right side: 3.201562119

Break this problem into two subproblems by setting 
(w + 1.5) equal to 3.201562119 and -3.201562119.

Subproblem 1

w + 1.5 = 3.201562119 Simplifying w + 1.5 = 3.201562119 Reorder the terms: 1.5 + w = 3.201562119 Solving 1.5 + w = 3.201562119 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + w = 3.201562119 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + w = 3.201562119 + -1.5 w = 3.201562119 + -1.5 Combine like terms: 3.201562119 + -1.5 = 1.701562119 w = 1.701562119 Simplifying w = 1.701562119

Subproblem 2

w + 1.5 = -3.201562119 Simplifying w + 1.5 = -3.201562119 Reorder the terms: 1.5 + w = -3.201562119 Solving 1.5 + w = -3.201562119 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + w = -3.201562119 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + w = -3.201562119 + -1.5 w = -3.201562119 + -1.5 Combine like terms: -3.201562119 + -1.5 = -4.701562119 w = -4.701562119 Simplifying w = -4.701562119

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.701562119, -4.701562119}

See similar equations:

| 7x+3(2+x)=12x | | 2/3x+2=6 | | 3x^2-16x+6=0 | | 3v+9=-21 | | (5x+8)(5x-3)= | | 8y+4=16 | | -1(2X-2Y)=-2X+2Y | | 6(6x-6)=27 | | 5-8r=-29 | | -17.9-b=23.8 | | (3n-2)(5n+4)= | | 11x+4=5-2x | | -16t^2+25t-7=0 | | N^2=3n+28 | | 9(5g+4)/2=63 | | -4=-4n-8 | | g^2-6g-10=0 | | 7d+6=4d+33 | | (-4x-4)=12 | | 24x^5-14x^4=0 | | 7(x-9)=-9.8 | | 4x-2.1=3x-2.0 | | nt=no+1735000 | | 3(a+7)=22.8 | | -1/9(x-27)+1/3(x+3)=x-7 | | 2(0.5z^2+7)=z(z-5) | | 6n^2+8n/6n | | y+1=-5/8-5/8 | | a+21=22.8 | | 7/8x=21 | | -7x+y=10 | | 3t=18.75 |

Equations solver categories