2x^2-6x-9+11=0

Simple and best practice solution for 2x^2-6x-9+11=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^2-6x-9+11=0 equation:


Simplifying
2x2 + -6x + -9 + 11 = 0

Reorder the terms:
-9 + 11 + -6x + 2x2 = 0

Combine like terms: -9 + 11 = 2
2 + -6x + 2x2 = 0

Solving
2 + -6x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -3x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(1 + -3x + x2)' equal to zero and attempt to solve: Simplifying 1 + -3x + x2 = 0 Solving 1 + -3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + -3x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -3x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x + x2 = 0 + -1 -3x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -3x + x2 = -1 The x term is -3x. 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. -3x + 2.25 + x2 = -1 + 2.25 Reorder the terms: 2.25 + -3x + x2 = -1 + 2.25 Combine like terms: -1 + 2.25 = 1.25 2.25 + -3x + x2 = 1.25 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 1.25 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (x + -1.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + -1.5 = 1.118033989 Simplifying x + -1.5 = 1.118033989 Reorder the terms: -1.5 + x = 1.118033989 Solving -1.5 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.118033989 + 1.5 x = 1.118033989 + 1.5 Combine like terms: 1.118033989 + 1.5 = 2.618033989 x = 2.618033989 Simplifying x = 2.618033989

Subproblem 2

x + -1.5 = -1.118033989 Simplifying x + -1.5 = -1.118033989 Reorder the terms: -1.5 + x = -1.118033989 Solving -1.5 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.118033989 + 1.5 x = -1.118033989 + 1.5 Combine like terms: -1.118033989 + 1.5 = 0.381966011 x = 0.381966011 Simplifying x = 0.381966011

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.618033989, 0.381966011}

Solution

x = {2.618033989, 0.381966011}

See similar equations:

| a=(3.14)(6.25) | | 13-7X=11X+22 | | -8y=-7-y | | 0.3a+(0.2a-0.5)+(a+2)=1.3 | | -8+3(-20h-20)=-4(13h-15) | | 0.3+(0.2a-0.5)+(a+2)=1.3 | | x^8+5x^4+6=0 | | D+9=6.9 | | 3(-7r+20)=6-14r+11r | | 7p+5q=67 | | 3(8-2b)=-3(4b-11) | | 4x^2-9x-100=0 | | 3p+5q=43 | | 4x^3+160=3x^2+6x | | 17s=3(5s+18)-20 | | x-2x+3-(x/5)=5 | | -7k+3(12k-16)=-7(-16k-5) | | 4n+6=2n+6 | | 10m-10m-18=9m-5(2m+1) | | 3x+-.6=5.4 | | (8-5s)(4-5s)= | | -15+19q=-5(-5q-9) | | 3x+-.6=54 | | 1/5(30-10x)=2/3(4x+2) | | 12-18f+f=-5(7f+9)+15f | | 8x=9x-7 | | x(x+3)=20 | | 9+76=16 | | -15g=9(-2g-17) | | 3x+.75=5.4 | | 14x^2+11x+2=0 | | -6.7y-15.2y+7=-10.7y-15.4 |

Equations solver categories