x^2=-10*x-2

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


Simplifying
x2 = -10x + -2

Reorder the terms:
x2 = -2 + -10x

Solving
x2 = -2 + -10x

Solving for variable 'x'.

Reorder the terms:
2 + 10x + x2 = -2 + -10x + 2 + 10x

Reorder the terms:
2 + 10x + x2 = -2 + 2 + -10x + 10x

Combine like terms: -2 + 2 = 0
2 + 10x + x2 = 0 + -10x + 10x
2 + 10x + x2 = -10x + 10x

Combine like terms: -10x + 10x = 0
2 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 10x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + 10x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 10x + x2 = 0 + -2
10x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
10x + x2 = -2

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = -2 + 25

Reorder the terms:
25 + 10x + x2 = -2 + 25

Combine like terms: -2 + 25 = 23
25 + 10x + x2 = 23

Factor a perfect square on the left side:
(x + 5)(x + 5) = 23

Calculate the square root of the right side: 4.795831523

Break this problem into two subproblems by setting 
(x + 5) equal to 4.795831523 and -4.795831523.

Subproblem 1

x + 5 = 4.795831523 Simplifying x + 5 = 4.795831523 Reorder the terms: 5 + x = 4.795831523 Solving 5 + x = 4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 4.795831523 + -5 Combine like terms: 5 + -5 = 0 0 + x = 4.795831523 + -5 x = 4.795831523 + -5 Combine like terms: 4.795831523 + -5 = -0.204168477 x = -0.204168477 Simplifying x = -0.204168477

Subproblem 2

x + 5 = -4.795831523 Simplifying x + 5 = -4.795831523 Reorder the terms: 5 + x = -4.795831523 Solving 5 + x = -4.795831523 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -4.795831523 + -5 Combine like terms: 5 + -5 = 0 0 + x = -4.795831523 + -5 x = -4.795831523 + -5 Combine like terms: -4.795831523 + -5 = -9.795831523 x = -9.795831523 Simplifying x = -9.795831523

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.204168477, -9.795831523}

See similar equations:

| 4z-3y=8 | | -5(6n+6)-30=30 | | -5n-8(1+2n)=34 | | 10(1-5b)=-40 | | 0.33(6+x)-5=12 | | -(v+x)+6(-4x+4v)= | | 3t^2=75 | | 72=3w | | -(-5-2f)-(8-3f)=22 | | 36x^2-63x+20=0 | | -(-5f)-(8-3f)=22 | | -(-8-2f)-(8-3f)=22 | | (-4e+9)-(3e+2)=0 | | 4d-5=d+7 | | 4b-5=3b+3 | | 2x^2=512 | | v^2+v-30=0 | | 10a+12=5a+32 | | 6.00+3.50(x+1)=44.50 | | 65+195(x+1)=2405 | | 2x-4=8x+7 | | 2x(4-7)=6x(3-9) | | 2x-4=8x+7x | | 7+1x=40 | | 42t^2-17t=15 | | -4x-[3x-2(x+6)]-7= | | 12r^2-13r=35 | | -4x-3[3x-3(x+6)]-5= | | 9x-(6x+4)= | | 16=c(c-6) | | -6x+4[x-6(2-x)]= | | -8.1+5x-6.1+2x-2.5=5.8+8x+1.4 |

Equations solver categories