5x^2-11x-2=

Simple and best practice solution for 5x^2-11x-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 5x^2-11x-2= equation:


Simplifying
5x2 + -11x + -2 = 0

Reorder the terms:
-2 + -11x + 5x2 = 0

Solving
-2 + -11x + 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 + -2.2x + x2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + -2.2x + 0.4 + x2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + -2.2x + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + -2.2x + x2 = 0 + 0.4
-2.2x + x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
-2.2x + x2 = 0.4

The x term is -2.2x.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2x + 1.21 + x2 = 0.4 + 1.21

Reorder the terms:
1.21 + -2.2x + x2 = 0.4 + 1.21

Combine like terms: 0.4 + 1.21 = 1.61
1.21 + -2.2x + x2 = 1.61

Factor a perfect square on the left side:
(x + -1.1)(x + -1.1) = 1.61

Calculate the square root of the right side: 1.268857754

Break this problem into two subproblems by setting 
(x + -1.1) equal to 1.268857754 and -1.268857754.

Subproblem 1

x + -1.1 = 1.268857754 Simplifying x + -1.1 = 1.268857754 Reorder the terms: -1.1 + x = 1.268857754 Solving -1.1 + x = 1.268857754 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + x = 1.268857754 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + x = 1.268857754 + 1.1 x = 1.268857754 + 1.1 Combine like terms: 1.268857754 + 1.1 = 2.368857754 x = 2.368857754 Simplifying x = 2.368857754

Subproblem 2

x + -1.1 = -1.268857754 Simplifying x + -1.1 = -1.268857754 Reorder the terms: -1.1 + x = -1.268857754 Solving -1.1 + x = -1.268857754 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + x = -1.268857754 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + x = -1.268857754 + 1.1 x = -1.268857754 + 1.1 Combine like terms: -1.268857754 + 1.1 = -0.168857754 x = -0.168857754 Simplifying x = -0.168857754

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.368857754, -0.168857754}

See similar equations:

| 9+8x=-12+x | | 3x^2-11x+2= | | 7-3(4x+4)=3x+5(x-9) | | 7+21x=16 | | 4x+3(-5x-3)=64 | | (x^3-4)^1/3 | | 3(5x-5)=-30 | | 5x^2=10x-6 | | ln(-8n+7)=4 | | e^3-8x=1623 | | 9f-3=15 | | x+1=-3x+21 | | 2x-5x=-3 | | 7+1+1+1+10-15= | | 16x+244=77x | | |2+3|*|6-1|= | | |2+3|*|6-1|=? | | 5x+44=164 | | 10(s-5)=-126 | | |2x+3|*|x-1|= | | 2(4x-3)=-46 | | 9ln(-8n+7)+5=41 | | 3/4x-2/x=5 | | 4(2x-3)-5=5x-44 | | 77+x=136 | | k-10=-3k | | 3(x-4)-9=-4x+42 | | 29/27 | | -4=-6+5x | | (x-2)-(x-1)(3-2x)=3(x+3)(x-3)+25 | | 2+6x=9x | | 4(2a-4b)= |

Equations solver categories