2-11x^2-8x+6x^2=

Simple and best practice solution for 2-11x^2-8x+6x^2= 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 2-11x^2-8x+6x^2= equation:


Simplifying
2 + -11x2 + -8x + 6x2 = 0

Reorder the terms:
2 + -8x + -11x2 + 6x2 = 0

Combine like terms: -11x2 + 6x2 = -5x2
2 + -8x + -5x2 = 0

Solving
2 + -8x + -5x2 = 0

Solving for variable 'x'.

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

Divide each side by '-5'.
-0.4 + 1.6x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 1.6x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 1.6x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 1.6x + x2 = 0 + 0.4
1.6x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
1.6x + x2 = 0.4

The x term is 1.6x.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6x + 0.64 + x2 = 0.4 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = 0.4 + 0.64

Combine like terms: 0.4 + 0.64 = 1.04
0.64 + 1.6x + x2 = 1.04

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = 1.04

Calculate the square root of the right side: 1.019803903

Break this problem into two subproblems by setting 
(x + 0.8) equal to 1.019803903 and -1.019803903.

Subproblem 1

x + 0.8 = 1.019803903 Simplifying x + 0.8 = 1.019803903 Reorder the terms: 0.8 + x = 1.019803903 Solving 0.8 + x = 1.019803903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = 1.019803903 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = 1.019803903 + -0.8 x = 1.019803903 + -0.8 Combine like terms: 1.019803903 + -0.8 = 0.219803903 x = 0.219803903 Simplifying x = 0.219803903

Subproblem 2

x + 0.8 = -1.019803903 Simplifying x + 0.8 = -1.019803903 Reorder the terms: 0.8 + x = -1.019803903 Solving 0.8 + x = -1.019803903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = -1.019803903 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = -1.019803903 + -0.8 x = -1.019803903 + -0.8 Combine like terms: -1.019803903 + -0.8 = -1.819803903 x = -1.819803903 Simplifying x = -1.819803903

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.219803903, -1.819803903}

See similar equations:

| -7+15+x=-2 | | 5.55=7t-8 | | -12t+50=-34 | | 10x-4y-5z= | | 2.04=x^12 | | 64t^2+16t-1=0 | | 10x+17-2=14x-8+4x | | 4w+3=2w+10 | | 10x+17-2=14a-8+4x | | -5x^2-41x+36=0 | | 3a+5(a-1)+7=2c | | -6h-5=31 | | 144=((6+x(2))+x)2 | | 3(8-4x)=-120 | | 2(9+3x)=-18 | | 2x+5=6x | | 7x-40+7x^2=0 | | X^4+3x^3-11x^2+99x+8=0 | | -4k+17= | | 16t^2+24t+9=0 | | f+9.42=37.68 | | 5(b+1)=4(b+3) | | 8a+48= | | n^2+n-182=0 | | -9x-6=-4-10x | | y+.2=.4(y+5) | | 11-p=19 | | (2x^2-x-3)-(x+1)=y | | -5x+15=5 | | -2x=o | | (-5-6)+(-1-4)= | | 2(x-2)+2x=4(x+8)-36 |

Equations solver categories