5x^2+2x-2=6

Simple and best practice solution for 5x^2+2x-2=6 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+2x-2=6 equation:


Simplifying
5x2 + 2x + -2 = 6

Reorder the terms:
-2 + 2x + 5x2 = 6

Solving
-2 + 2x + 5x2 = 6

Solving for variable 'x'.

Reorder the terms:
-2 + -6 + 2x + 5x2 = 6 + -6

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

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

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

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

Move the constant term to the right:

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

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

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

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

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = 1.6 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = 1.6 + 0.04

Combine like terms: 1.6 + 0.04 = 1.64
0.04 + 0.4x + x2 = 1.64

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = 1.64

Calculate the square root of the right side: 1.280624847

Break this problem into two subproblems by setting 
(x + 0.2) equal to 1.280624847 and -1.280624847.

Subproblem 1

x + 0.2 = 1.280624847 Simplifying x + 0.2 = 1.280624847 Reorder the terms: 0.2 + x = 1.280624847 Solving 0.2 + x = 1.280624847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = 1.280624847 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = 1.280624847 + -0.2 x = 1.280624847 + -0.2 Combine like terms: 1.280624847 + -0.2 = 1.080624847 x = 1.080624847 Simplifying x = 1.080624847

Subproblem 2

x + 0.2 = -1.280624847 Simplifying x + 0.2 = -1.280624847 Reorder the terms: 0.2 + x = -1.280624847 Solving 0.2 + x = -1.280624847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + x = -1.280624847 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + x = -1.280624847 + -0.2 x = -1.280624847 + -0.2 Combine like terms: -1.280624847 + -0.2 = -1.480624847 x = -1.480624847 Simplifying x = -1.480624847

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.080624847, -1.480624847}

See similar equations:

| 5x/x-1+2/x=6 | | 4-2x/3 | | (-5/2)^3 | | 24+48+48x=168 | | 3a^2+10ab+7b^2=0 | | 4(4n-0.5)=6 | | (-5/2)^2 | | -(3/4)^4 | | 9x+144=180 | | 2/5^3 | | (-3/2)^2 | | (9y-1)(3y^2-y+5)= | | 3/4x+3/4=63/4 | | y-(-5)=-7/4(x-3) | | 2(x-7)+(3+2x)+6=0 | | 2-69= | | -1=-2/5(4)+b | | ln(14/x)=1.86 | | -4y(2x+3w)= | | ax+2xy=14forx | | 8x+7y=-30 | | 4*8=x | | 2(x+4)=3(n+2) | | 8x+7y=111 | | 2m^3=-54 | | 8-k+3-4k= | | 7x-8y=-30 | | -1=-2/5(2)+b | | x=150+0.85x | | 14/11-6/11 | | 2(m+3)+7= | | -2=-15+b |

Equations solver categories