w^2-3w-6=0

Simple and best practice solution for w^2-3w-6=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-6=0 equation:


Simplifying
w2 + -3w + -6 = 0

Reorder the terms:
-6 + -3w + w2 = 0

Solving
-6 + -3w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -3w + 6 + w2 = 0 + 6

Reorder the terms:
-6 + 6 + -3w + w2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -3w + w2 = 0 + 6
-3w + w2 = 0 + 6

Combine like terms: 0 + 6 = 6
-3w + w2 = 6

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 = 6 + 2.25

Reorder the terms:
2.25 + -3w + w2 = 6 + 2.25

Combine like terms: 6 + 2.25 = 8.25
2.25 + -3w + w2 = 8.25

Factor a perfect square on the left side:
(w + -1.5)(w + -1.5) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(w + -1.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

w + -1.5 = 2.872281323 Simplifying w + -1.5 = 2.872281323 Reorder the terms: -1.5 + w = 2.872281323 Solving -1.5 + w = 2.872281323 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 = 2.872281323 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + w = 2.872281323 + 1.5 w = 2.872281323 + 1.5 Combine like terms: 2.872281323 + 1.5 = 4.372281323 w = 4.372281323 Simplifying w = 4.372281323

Subproblem 2

w + -1.5 = -2.872281323 Simplifying w + -1.5 = -2.872281323 Reorder the terms: -1.5 + w = -2.872281323 Solving -1.5 + w = -2.872281323 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 = -2.872281323 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + w = -2.872281323 + 1.5 w = -2.872281323 + 1.5 Combine like terms: -2.872281323 + 1.5 = -1.372281323 w = -1.372281323 Simplifying w = -1.372281323

Solution

The solution to the problem is based on the solutions from the subproblems. w = {4.372281323, -1.372281323}

See similar equations:

| 2t-8=3t+4 | | -9=2x-11x-27 | | (4+3x)-(2-2x)=10 | | 12p+23=14p-27 | | 10x+3x-102=-10x+45 | | 3s+3= | | 5t^2+3t-2=0 | | 2+2sin^2=4cos^2x | | 0.2x+0.7=0.8x-2.3 | | 4x-13+7x=-24 | | f(-6)=8-3x+2 | | =5x^2-5x^3 | | 6a+18=27 | | 2(3x+5)-(2x-6)+1=5(x-1)-3(x+2)+3 | | 6(s+1)=15g-9 | | 7=1-5k+6 | | 6w+3+3w=3(4+w)-3 | | 21-7t-5t=t-5 | | 0.2x+0.7=0.8-2.3 | | 4(1-4a)+10a=11-6a | | 243000*-.02702= | | 14+27m=8+20m | | -3v-1=3v+23 | | 4-5w=-w-8 | | N-1.35=19.9M | | 6(9+x)=-30 | | 0=x^5-5x^3+4x | | 2x-7=28-3x | | 3y-5x=3 | | 243000x-.02702= | | 2(x-12)=40 | | -3(5x-6)=63 |

Equations solver categories