5x^2-10x-56=0

Simple and best practice solution for 5x^2-10x-56=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^2-10x-56=0 equation:


Simplifying
5x2 + -10x + -56 = 0

Reorder the terms:
-56 + -10x + 5x2 = 0

Solving
-56 + -10x + 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'.
-11.2 + -2x + x2 = 0

Move the constant term to the right:

Add '11.2' to each side of the equation.
-11.2 + -2x + 11.2 + x2 = 0 + 11.2

Reorder the terms:
-11.2 + 11.2 + -2x + x2 = 0 + 11.2

Combine like terms: -11.2 + 11.2 = 0.0
0.0 + -2x + x2 = 0 + 11.2
-2x + x2 = 0 + 11.2

Combine like terms: 0 + 11.2 = 11.2
-2x + x2 = 11.2

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 = 11.2 + 1

Reorder the terms:
1 + -2x + x2 = 11.2 + 1

Combine like terms: 11.2 + 1 = 12.2
1 + -2x + x2 = 12.2

Factor a perfect square on the left side:
(x + -1)(x + -1) = 12.2

Calculate the square root of the right side: 3.492849839

Break this problem into two subproblems by setting 
(x + -1) equal to 3.492849839 and -3.492849839.

Subproblem 1

x + -1 = 3.492849839 Simplifying x + -1 = 3.492849839 Reorder the terms: -1 + x = 3.492849839 Solving -1 + x = 3.492849839 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 = 3.492849839 + 1 Combine like terms: -1 + 1 = 0 0 + x = 3.492849839 + 1 x = 3.492849839 + 1 Combine like terms: 3.492849839 + 1 = 4.492849839 x = 4.492849839 Simplifying x = 4.492849839

Subproblem 2

x + -1 = -3.492849839 Simplifying x + -1 = -3.492849839 Reorder the terms: -1 + x = -3.492849839 Solving -1 + x = -3.492849839 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 = -3.492849839 + 1 Combine like terms: -1 + 1 = 0 0 + x = -3.492849839 + 1 x = -3.492849839 + 1 Combine like terms: -3.492849839 + 1 = -2.492849839 x = -2.492849839 Simplifying x = -2.492849839

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.492849839, -2.492849839}

See similar equations:

| 10n+4=84 | | 4.507=19.3 | | 3x+x=-8+40x-16-12x | | abc*abc= | | 8p+3q=51 | | x^3-20x^2+19x=0 | | -3t-87t=34+9t-2 | | 12x-9=14x+17 | | 2(-7r+1)-3=-2+6r | | n-12=11 | | 2+6x=7x-7 | | ab*5ab= | | x^2-25.52x+162.56525=0 | | 4x+7=-41+8x | | 36-3c=-15 | | (6y-25)=(5y+1) | | 2ax^2*3ax= | | -5-(2p-9)=-2p-5 | | 258-7x=38x+16 | | 5x-25=40 | | 5+4z=6z+13 | | 2h^2*3h^3= | | 18=8*2X | | n+31=47 | | 4w*3w= | | 11-10x=71-24x | | a+23.5=15.8 | | (w+3)(w+8)=0 | | -9r=45 | | 12d+15=5 | | 12d+15=s | | 12n=72 |

Equations solver categories