x^2-13x-10=0

Simple and best practice solution for x^2-13x-10=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 x^2-13x-10=0 equation:


Simplifying
x2 + -13x + -10 = 0

Reorder the terms:
-10 + -13x + x2 = 0

Solving
-10 + -13x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -13x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + -13x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -13x + x2 = 0 + 10
-13x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
-13x + x2 = 10

The x term is -13x.  Take half its coefficient (-6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
-13x + 42.25 + x2 = 10 + 42.25

Reorder the terms:
42.25 + -13x + x2 = 10 + 42.25

Combine like terms: 10 + 42.25 = 52.25
42.25 + -13x + x2 = 52.25

Factor a perfect square on the left side:
(x + -6.5)(x + -6.5) = 52.25

Calculate the square root of the right side: 7.228416147

Break this problem into two subproblems by setting 
(x + -6.5) equal to 7.228416147 and -7.228416147.

Subproblem 1

x + -6.5 = 7.228416147 Simplifying x + -6.5 = 7.228416147 Reorder the terms: -6.5 + x = 7.228416147 Solving -6.5 + x = 7.228416147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = 7.228416147 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = 7.228416147 + 6.5 x = 7.228416147 + 6.5 Combine like terms: 7.228416147 + 6.5 = 13.728416147 x = 13.728416147 Simplifying x = 13.728416147

Subproblem 2

x + -6.5 = -7.228416147 Simplifying x + -6.5 = -7.228416147 Reorder the terms: -6.5 + x = -7.228416147 Solving -6.5 + x = -7.228416147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + x = -7.228416147 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + x = -7.228416147 + 6.5 x = -7.228416147 + 6.5 Combine like terms: -7.228416147 + 6.5 = -0.728416147 x = -0.728416147 Simplifying x = -0.728416147

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.728416147, -0.728416147}

See similar equations:

| h=4+50t-16t | | 3(2x-1)=1x-1 | | -3x-7=3-4x | | 3x^2-28+2x^2-3x=0 | | 3x^2-28+2x^2-3x=180 | | 6(8+2x)=4-12x | | (4x+5)+2x=180 | | 9x(3x+1)=15 | | 4.5-1=2(y-5.7) | | 2x+3+5y=13 | | =x^2-13x+c | | 5y=-2x^2 | | 100+20=y | | =-16t^2+26t+5 | | 100+2y+3z=520 | | (X+5)2+(y-6)2=16 | | 18/88 | | 7x+11y=-23 | | 4n+2=7-n | | -2(v+1)=-9v+47 | | x=1.76-1.41*cos(x) | | x=1.76-1.41cos(x) | | X^2+3=4x+6 | | 1.25-0.71x=cos(x) | | 0.09-0.001(x+1)=-0.02(2-x) | | 3(x-2)-4(3-x)=2(3x+1) | | 2(x-6)=4x+12 | | 0.05=0.65*[x+(x-0.07)0.5] | | 5(a+3)=-(4a-6)+1 | | 7m+2n=-8 | | 4x(5)2=(3)4/9 | | 0.09-0.001(x+1)=0.02(2-x) |

Equations solver categories