5x^2+6x-6=0

Simple and best practice solution for 5x^2+6x-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 5x^2+6x-6=0 equation:


Simplifying
5x2 + 6x + -6 = 0

Reorder the terms:
-6 + 6x + 5x2 = 0

Solving
-6 + 6x + 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'.
-1.2 + 1.2x + x2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + 1.2x + 1.2 + x2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + 1.2x + x2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 1.2x + x2 = 0 + 1.2
1.2x + x2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
1.2x + x2 = 1.2

The x term is 1.2x.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2x + 0.36 + x2 = 1.2 + 0.36

Reorder the terms:
0.36 + 1.2x + x2 = 1.2 + 0.36

Combine like terms: 1.2 + 0.36 = 1.56
0.36 + 1.2x + x2 = 1.56

Factor a perfect square on the left side:
(x + 0.6)(x + 0.6) = 1.56

Calculate the square root of the right side: 1.2489996

Break this problem into two subproblems by setting 
(x + 0.6) equal to 1.2489996 and -1.2489996.

Subproblem 1

x + 0.6 = 1.2489996 Simplifying x + 0.6 = 1.2489996 Reorder the terms: 0.6 + x = 1.2489996 Solving 0.6 + x = 1.2489996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = 1.2489996 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = 1.2489996 + -0.6 x = 1.2489996 + -0.6 Combine like terms: 1.2489996 + -0.6 = 0.6489996 x = 0.6489996 Simplifying x = 0.6489996

Subproblem 2

x + 0.6 = -1.2489996 Simplifying x + 0.6 = -1.2489996 Reorder the terms: 0.6 + x = -1.2489996 Solving 0.6 + x = -1.2489996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = -1.2489996 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = -1.2489996 + -0.6 x = -1.2489996 + -0.6 Combine like terms: -1.2489996 + -0.6 = -1.8489996 x = -1.8489996 Simplifying x = -1.8489996

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6489996, -1.8489996}

See similar equations:

| -96=8(3n+3) | | 20b^2-17b-10=0 | | 3*x+4=18-x | | 3x^2+5x-8= | | 4x+8-3x+1= | | Y=0.8x+6.8 | | .75(x-5)=.667(3x-4) | | 5x+5+155+5x+5=180 | | 3(4x+7)=-34+7 | | M-3(3)=15 | | 3(x+1)=3x+7 | | 3(w-8)=-3w-42 | | 12x^2-196y^2= | | 4(1+4p)=-92 | | 4x^2-21x+33=4x+8 | | 6x+30=-6(x-9) | | Y^4+-10y^2-9=0 | | 3.5x*x=120 | | 69=3(-3r+5) | | 32+4y-11=15y-9-5y | | 16(x+5)=4(4x+3)+68 | | 8(y-1)=2y-2 | | x*3x=120 | | 81=-5(1-3b)-4 | | -5y+8(y-2)=-13 | | 10z-z=-1+2z-2-18 | | x^2+4x-3=3x-1 | | 22=6v+2(v+3) | | 5m+n=0 | | 5v-2(1-3v)=-68 | | 4x^2-25x+41=2x+6 | | -66=-6(x+6) |

Equations solver categories