(-2x^2)+4x=-1

Simple and best practice solution for (-2x^2)+4x=-1 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)+4x=-1 equation:


Simplifying
(-2x2) + 4x = -1

Reorder the terms:
4x + (-2x2) = -1

Solving
4x + (-2x2) = -1

Solving for variable 'x'.

Reorder the terms:
1 + 4x + (-2x2) = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 4x + (-2x2) = 0

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

Divide each side by '-2'.
-0.5 + -2x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -2x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -2x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -2x + x2 = 0 + 0.5
-2x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-2x + x2 = 0.5

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 0.5 + 1

Reorder the terms:
1 + -2x + x2 = 0.5 + 1

Combine like terms: 0.5 + 1 = 1.5
1 + -2x + x2 = 1.5

Factor a perfect square on the left side:
((x) + -1)((x) + -1) = 1.5

Calculate the square root of the right side: 1.224744871

Break this problem into two subproblems by setting 
((x) + -1) equal to 1.224744871 and -1.224744871.

Subproblem 1

(x) + -1 = 1.224744871 Simplifying (x) + -1 = 1.224744871 x + -1 = 1.224744871 Reorder the terms: -1 + x = 1.224744871 Solving -1 + x = 1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.224744871 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.224744871 + 1 x = 1.224744871 + 1 Combine like terms: 1.224744871 + 1 = 2.224744871 x = 2.224744871 Simplifying x = 2.224744871

Subproblem 2

(x) + -1 = -1.224744871 Simplifying (x) + -1 = -1.224744871 x + -1 = -1.224744871 Reorder the terms: -1 + x = -1.224744871 Solving -1 + x = -1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.224744871 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.224744871 + 1 x = -1.224744871 + 1 Combine like terms: -1.224744871 + 1 = -0.224744871 x = -0.224744871 Simplifying x = -0.224744871

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.224744871, -0.224744871}

See similar equations:

| 2x^2+kx+3=0 | | 6(p-3)=15 | | 3x^2-2=31 | | 14+x=41 | | 4y=44yx | | -y/3=11 | | X(9)=72 | | 28xy=4y | | -(-4x+9-1)= | | (3x-7)+(5x+6)= | | 2x+7+x=4x+25 | | 36-9x=144+4x | | (6/7wz^7)(1/5w^2z^2) | | 72x^5+4-9x^2-32x^3= | | 6x+8+7x=151 | | 2w+w(w-10)=2w-19 | | 11w^2+39w=0 | | 72x^2+4-9x^2-32x^3= | | 2/7k=1/14k=-3 | | x-10/5=-25 | | ln(3x-1)=6 | | 1/x0 | | y=x(x+2)(x-10) | | e^5x=60 | | -3/1(x-9)=-1 | | 3/4p-1/5r-3/5r-1/2p= | | 0=2x^2-7x-40 | | 4x^2-56x+172=0 | | -7p-18=-8p | | 12x^2+42=15x^2+15 | | xcubed+xsquared=100 | | 4/5=x/4 |

Equations solver categories