5x^2-4x-10=0

Simple and best practice solution for 5x^2-4x-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 5x^2-4x-10=0 equation:


Simplifying
5x2 + -4x + -10 = 0

Reorder the terms:
-10 + -4x + 5x2 = 0

Solving
-10 + -4x + 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'.
-2 + -0.8x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -0.8x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -0.8x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -0.8x + x2 = 0 + 2
-0.8x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-0.8x + x2 = 2

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = 2 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 2 + 0.16

Combine like terms: 2 + 0.16 = 2.16
0.16 + -0.8x + x2 = 2.16

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 2.16

Calculate the square root of the right side: 1.469693846

Break this problem into two subproblems by setting 
(x + -0.4) equal to 1.469693846 and -1.469693846.

Subproblem 1

x + -0.4 = 1.469693846 Simplifying x + -0.4 = 1.469693846 Reorder the terms: -0.4 + x = 1.469693846 Solving -0.4 + x = 1.469693846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 1.469693846 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 1.469693846 + 0.4 x = 1.469693846 + 0.4 Combine like terms: 1.469693846 + 0.4 = 1.869693846 x = 1.869693846 Simplifying x = 1.869693846

Subproblem 2

x + -0.4 = -1.469693846 Simplifying x + -0.4 = -1.469693846 Reorder the terms: -0.4 + x = -1.469693846 Solving -0.4 + x = -1.469693846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -1.469693846 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -1.469693846 + 0.4 x = -1.469693846 + 0.4 Combine like terms: -1.469693846 + 0.4 = -1.069693846 x = -1.069693846 Simplifying x = -1.069693846

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.869693846, -1.069693846}

See similar equations:

| (x+4)+(x-30)=150 | | -9x+7y=-2 | | x-17=21 | | 4x(5x^2+1)= | | X^4-x^3+15x^2-5x-42=0 | | -156=4(1+8n) | | 7(7b-4)=-420 | | -56=8n+8 | | -7=k-5 | | 4y=-7 | | 4-x=-6 | | -21=p-7 | | -6a+4+7a=5-28 | | y=-x^2-4x+10 | | -.75x=27 | | 0.6w-0.3+0.2w=5 | | 6x(7x^2+6)= | | w^2-8w=-12 | | y=6x-14 | | 27x^2+9x= | | 8x+3x=260 | | A=27x^2+9x | | (-2)2+4(-3)-3= | | 3v^2+3v=2 | | (-2)2+4(3)-3= | | 8y+1.5x=260 | | 8x+1.5y=260 | | (-2k+8)k=1 | | -15t^2+135+10=280 | | (t^2-9+18)=0 | | (x)=3x^2-x-2 | | 10x=8x+1.5x |

Equations solver categories