x=-2x^2+6x+2

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


Simplifying
x = -2x2 + 6x + 2

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

Solving
x = 2 + 6x + -2x2

Solving for variable 'x'.

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

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

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

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

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

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

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

Divide each side by '2'.
-1 + -2.5x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -2.5x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -2.5x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2.5x + x2 = 0 + 1
-2.5x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-2.5x + x2 = 1

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = 1 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = 1 + 1.5625

Combine like terms: 1 + 1.5625 = 2.5625
1.5625 + -2.5x + x2 = 2.5625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.600781059 and -1.600781059.

Subproblem 1

x + -1.25 = 1.600781059 Simplifying x + -1.25 = 1.600781059 Reorder the terms: -1.25 + x = 1.600781059 Solving -1.25 + x = 1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.600781059 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.600781059 + 1.25 x = 1.600781059 + 1.25 Combine like terms: 1.600781059 + 1.25 = 2.850781059 x = 2.850781059 Simplifying x = 2.850781059

Subproblem 2

x + -1.25 = -1.600781059 Simplifying x + -1.25 = -1.600781059 Reorder the terms: -1.25 + x = -1.600781059 Solving -1.25 + x = -1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.600781059 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.600781059 + 1.25 x = -1.600781059 + 1.25 Combine like terms: -1.600781059 + 1.25 = -0.350781059 x = -0.350781059 Simplifying x = -0.350781059

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.850781059, -0.350781059}

See similar equations:

| 17.5(y-2)=-2(12-9y)+y | | n/4-5=9 | | 400=40+0.90(y) | | C-2/7=5/7 | | 1/3d=64 | | 3x-10=5x+22 | | 5x-24=1x | | -4y=10x+15 | | 5+n=2-8(n+3) | | (-32x^10y^5)^4/5 | | x+2x+3x+40=180 | | 3x+6x+x=16+30+9x | | 13=15q-17 | | s-5=25.42 | | 2x-3(2x+14)=-22 | | 6(28.3)+10+4x=180 | | 1+9m=-62 | | 5y+13=113 | | 6x+7-2x-14=4x+8 | | 21-8z=-11 | | 216=w(w+6) | | 9(3n+3)=7(7n+7)+7 | | 2(x-4)=-12(3x+1) | | 2(0.5-y)=4.6 | | 7x-5(3x-7)=11 | | x^2=3n | | (7x-16)+(x+8)+(4x)=180 | | 13x+2y=10 | | 12(3)(-2)= | | 8-2h=58 | | 5y+2x=60 | | 3(x+6)+3=3+5(x-4) |

Equations solver categories