(x^2+6x-5)+(x^2-8x-4)=

Simple and best practice solution for (x^2+6x-5)+(x^2-8x-4)= 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+6x-5)+(x^2-8x-4)= equation:


Simplifying
(x2 + 6x + -5) + (x2 + -8x + -4) = 0

Reorder the terms:
(-5 + 6x + x2) + (x2 + -8x + -4) = 0

Remove parenthesis around (-5 + 6x + x2)
-5 + 6x + x2 + (x2 + -8x + -4) = 0

Reorder the terms:
-5 + 6x + x2 + (-4 + -8x + x2) = 0

Remove parenthesis around (-4 + -8x + x2)
-5 + 6x + x2 + -4 + -8x + x2 = 0

Reorder the terms:
-5 + -4 + 6x + -8x + x2 + x2 = 0

Combine like terms: -5 + -4 = -9
-9 + 6x + -8x + x2 + x2 = 0

Combine like terms: 6x + -8x = -2x
-9 + -2x + x2 + x2 = 0

Combine like terms: x2 + x2 = 2x2
-9 + -2x + 2x2 = 0

Solving
-9 + -2x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-4.5 + -1x + x2 = 0

Move the constant term to the right:

Add '4.5' to each side of the equation.
-4.5 + -1x + 4.5 + x2 = 0 + 4.5

Reorder the terms:
-4.5 + 4.5 + -1x + x2 = 0 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + -1x + x2 = 0 + 4.5
-1x + x2 = 0 + 4.5

Combine like terms: 0 + 4.5 = 4.5
-1x + x2 = 4.5

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 4.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 4.5 + 0.25

Combine like terms: 4.5 + 0.25 = 4.75
0.25 + -1x + x2 = 4.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 4.75

Calculate the square root of the right side: 2.179449472

Break this problem into two subproblems by setting 
(x + -0.5) equal to 2.179449472 and -2.179449472.

Subproblem 1

x + -0.5 = 2.179449472 Simplifying x + -0.5 = 2.179449472 Reorder the terms: -0.5 + x = 2.179449472 Solving -0.5 + x = 2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 2.179449472 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 2.179449472 + 0.5 x = 2.179449472 + 0.5 Combine like terms: 2.179449472 + 0.5 = 2.679449472 x = 2.679449472 Simplifying x = 2.679449472

Subproblem 2

x + -0.5 = -2.179449472 Simplifying x + -0.5 = -2.179449472 Reorder the terms: -0.5 + x = -2.179449472 Solving -0.5 + x = -2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -2.179449472 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -2.179449472 + 0.5 x = -2.179449472 + 0.5 Combine like terms: -2.179449472 + 0.5 = -1.679449472 x = -1.679449472 Simplifying x = -1.679449472

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.679449472, -1.679449472}

See similar equations:

| 1-x+-4= | | 4(x-2)=120 | | -7(1-x)=5(3x+3)+3x | | p-65.5=24.81 | | 3y+144=144-15y | | -10=3+z/2 | | 11+3x=7x+1 | | 11+3x=7x+1 | | 2m-3n=1+4n | | -6(2m+1)=3m+54 | | 180+6x=24x-10 | | 2-2x= | | 2x+3+7x-1=12+9x | | 4(2x-7)+4=8x-24 | | 8x^2-16x-27=0 | | 2x+1-x+(-2)= | | 2x=1000 | | p=2q-9 | | -9*x=3 | | 5s=5s+1 | | 15+4x=9x | | 9t^2+16=0 | | 1.9x+3.7=17 | | 5=-y+8 | | 5=-y | | 6x+2+5=55 | | b^2-3b=14+2b | | 2x-6=6x+18 | | 0=4x^2+7x | | 4(x+2)+x-1= | | 10x-25x-30=6-2x | | 6*-1+3=2y |

Equations solver categories