2x^2-20x-6=0

Simple and best practice solution for 2x^2-20x-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 2x^2-20x-6=0 equation:


Simplifying
2x2 + -20x + -6 = 0

Reorder the terms:
-6 + -20x + 2x2 = 0

Solving
-6 + -20x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + -10x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -10x + x2)' equal to zero and attempt to solve: Simplifying -3 + -10x + x2 = 0 Solving -3 + -10x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '3' to each side of the equation. -3 + -10x + 3 + x2 = 0 + 3 Reorder the terms: -3 + 3 + -10x + x2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -10x + x2 = 0 + 3 -10x + x2 = 0 + 3 Combine like terms: 0 + 3 = 3 -10x + x2 = 3 The x term is -10x. Take half its coefficient (-5). Square it (25) and add it to both sides. Add '25' to each side of the equation. -10x + 25 + x2 = 3 + 25 Reorder the terms: 25 + -10x + x2 = 3 + 25 Combine like terms: 3 + 25 = 28 25 + -10x + x2 = 28 Factor a perfect square on the left side: (x + -5)(x + -5) = 28 Calculate the square root of the right side: 5.291502622 Break this problem into two subproblems by setting (x + -5) equal to 5.291502622 and -5.291502622.

Subproblem 1

x + -5 = 5.291502622 Simplifying x + -5 = 5.291502622 Reorder the terms: -5 + x = 5.291502622 Solving -5 + x = 5.291502622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 5.291502622 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.291502622 + 5 x = 5.291502622 + 5 Combine like terms: 5.291502622 + 5 = 10.291502622 x = 10.291502622 Simplifying x = 10.291502622

Subproblem 2

x + -5 = -5.291502622 Simplifying x + -5 = -5.291502622 Reorder the terms: -5 + x = -5.291502622 Solving -5 + x = -5.291502622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -5.291502622 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.291502622 + 5 x = -5.291502622 + 5 Combine like terms: -5.291502622 + 5 = -0.291502622 x = -0.291502622 Simplifying x = -0.291502622

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.291502622, -0.291502622}

Solution

x = {10.291502622, -0.291502622}

See similar equations:

| X+0.8y=27 | | -178/4 | | 84+96+88+x=90 | | 84+96+88+x/4=90 | | 0.8x+y=27 | | x=-(72-9/8*y) | | 25n^2-70n+49=0 | | x=-72+9y/8 | | 7x+4y=75 | | 2y+13=25 | | 11x-32=22x+24 | | c/12-7=-12 | | y=72+8x/9 | | 1/40x2800 | | (3-5t)(7-8t)= | | 7x+6=x+24 | | 3600/62.5 | | 7x+6=24 | | 12-(x+9)=4x-7 | | 8x+2(-5+1)=-2 | | 8-10x-3x^2=0 | | 27/3x | | 3t^2+35t=12 | | y^2-8y+7/5-5y^2 | | 5x-x=120 | | -36+5(-6)-1= | | 4b^2+24=28b | | y=42+-7x | | 5.12(x^2-.7x+.12)=x | | (x-3)(x+7)=-9 | | 3.00(20.00+x)= | | 5+5929383= |

Equations solver categories