x^2+8x-41=0

Simple and best practice solution for x^2+8x-41=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+8x-41=0 equation:


Simplifying
x2 + 8x + -41 = 0

Reorder the terms:
-41 + 8x + x2 = 0

Solving
-41 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '41' to each side of the equation.
-41 + 8x + 41 + x2 = 0 + 41

Reorder the terms:
-41 + 41 + 8x + x2 = 0 + 41

Combine like terms: -41 + 41 = 0
0 + 8x + x2 = 0 + 41
8x + x2 = 0 + 41

Combine like terms: 0 + 41 = 41
8x + x2 = 41

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 41 + 16

Reorder the terms:
16 + 8x + x2 = 41 + 16

Combine like terms: 41 + 16 = 57
16 + 8x + x2 = 57

Factor a perfect square on the left side:
(x + 4)(x + 4) = 57

Calculate the square root of the right side: 7.549834435

Break this problem into two subproblems by setting 
(x + 4) equal to 7.549834435 and -7.549834435.

Subproblem 1

x + 4 = 7.549834435 Simplifying x + 4 = 7.549834435 Reorder the terms: 4 + x = 7.549834435 Solving 4 + x = 7.549834435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 7.549834435 + -4 Combine like terms: 4 + -4 = 0 0 + x = 7.549834435 + -4 x = 7.549834435 + -4 Combine like terms: 7.549834435 + -4 = 3.549834435 x = 3.549834435 Simplifying x = 3.549834435

Subproblem 2

x + 4 = -7.549834435 Simplifying x + 4 = -7.549834435 Reorder the terms: 4 + x = -7.549834435 Solving 4 + x = -7.549834435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -7.549834435 + -4 Combine like terms: 4 + -4 = 0 0 + x = -7.549834435 + -4 x = -7.549834435 + -4 Combine like terms: -7.549834435 + -4 = -11.549834435 x = -11.549834435 Simplifying x = -11.549834435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.549834435, -11.549834435}

See similar equations:

| 10x+16=6x+15 | | -6(4p+3)-30=2(3p+6) | | (1/3x)^-2/3=0 | | -4n+8=3y+6 | | 5y-8=3y+6 | | 7(c-2)=8(c-5) | | -1/4(8x+4)+1/6(42x+30) | | 0.14x+0.3(x-4)=0.01(4x-3) | | 7(c-2)=8 | | -3+11=14x-4-13x | | 5-4(x+4)=7x-22 | | 4-8n+5n=11-67 | | 4x-10=2x+40 | | v^2=-1-2v | | 7(x+6)=36 | | -88+2y+7=3(3y-4)-6 | | 3(6x-3)=19x | | 5(x-2)=65 | | .25[4r-8]=r-2 | | 1/8(5t-6)=11/8t-t+6/16 | | -3a-5+4a-6+2a= | | 4(c-4)+6=4+c-14 | | (x/20)=-0.10 | | p^2=p | | 8x+5=2x-31 | | 2-4t+9=19 | | -20+2k=k-3k | | 6c-8+3c=7c-2c+12 | | 6x-4=96 | | x-8+3x+2=90 | | 6x+5+x=1+2x-11 | | 7+5*2= |

Equations solver categories