x^2-5x-70=0

Simple and best practice solution for x^2-5x-70=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^2-5x-70=0 equation:


Simplifying
x2 + -5x + -70 = 0

Reorder the terms:
-70 + -5x + x2 = 0

Solving
-70 + -5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '70' to each side of the equation.
-70 + -5x + 70 + x2 = 0 + 70

Reorder the terms:
-70 + 70 + -5x + x2 = 0 + 70

Combine like terms: -70 + 70 = 0
0 + -5x + x2 = 0 + 70
-5x + x2 = 0 + 70

Combine like terms: 0 + 70 = 70
-5x + x2 = 70

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 70 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 70 + 6.25

Combine like terms: 70 + 6.25 = 76.25
6.25 + -5x + x2 = 76.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 76.25

Calculate the square root of the right side: 8.732124598

Break this problem into two subproblems by setting 
(x + -2.5) equal to 8.732124598 and -8.732124598.

Subproblem 1

x + -2.5 = 8.732124598 Simplifying x + -2.5 = 8.732124598 Reorder the terms: -2.5 + x = 8.732124598 Solving -2.5 + x = 8.732124598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 8.732124598 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 8.732124598 + 2.5 x = 8.732124598 + 2.5 Combine like terms: 8.732124598 + 2.5 = 11.232124598 x = 11.232124598 Simplifying x = 11.232124598

Subproblem 2

x + -2.5 = -8.732124598 Simplifying x + -2.5 = -8.732124598 Reorder the terms: -2.5 + x = -8.732124598 Solving -2.5 + x = -8.732124598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -8.732124598 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -8.732124598 + 2.5 x = -8.732124598 + 2.5 Combine like terms: -8.732124598 + 2.5 = -6.232124598 x = -6.232124598 Simplifying x = -6.232124598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.232124598, -6.232124598}

See similar equations:

| x+5+1=0 | | x(30-x)=216 | | 10d-8=8 | | =(2x+y)(x-3y) | | x^2+6x= | | 4-49x^2=0 | | (2x+y)(x-3y)= | | 0=x-5+2x^3 | | 0=4x^3+2x-10 | | .8333x=91 | | 3x-9y+8x+4y= | | 2x+22=12x-78 | | 4x+7=63 | | 4x+74+9x=14 | | 4+x-x^3=4x+2 | | 4x+x-x^3=4x+2 | | 8-7=65 | | 2-4x-x^3=4x | | X^2+12x-36=0 | | 5+2b=13 | | (x-4)*(x-3)= | | X^3+2x^2-4x-8=0 | | 4(x-2)+2=4X-2(2-X) | | 3+3+3= | | 5x^3+10x^2-3x=0 | | 8x-70=3x-5 | | 66-2x=7x+20 | | 3x-28y=20 | | 5-7x=77-21x | | x=2y+3 | | x=3y+4 | | 2x-10=-56-9x |

Equations solver categories