13x^2=-12x-1

Simple and best practice solution for 13x^2=-12x-1 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 13x^2=-12x-1 equation:


Simplifying
13x2 = -12x + -1

Reorder the terms:
13x2 = -1 + -12x

Solving
13x2 = -1 + -12x

Solving for variable 'x'.

Reorder the terms:
1 + 12x + 13x2 = -1 + -12x + 1 + 12x

Reorder the terms:
1 + 12x + 13x2 = -1 + 1 + -12x + 12x

Combine like terms: -1 + 1 = 0
1 + 12x + 13x2 = 0 + -12x + 12x
1 + 12x + 13x2 = -12x + 12x

Combine like terms: -12x + 12x = 0
1 + 12x + 13x2 = 0

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

Divide each side by '13'.
0.07692307692 + 0.9230769231x + x2 = 0

Move the constant term to the right:

Add '-0.07692307692' to each side of the equation.
0.07692307692 + 0.9230769231x + -0.07692307692 + x2 = 0 + -0.07692307692

Reorder the terms:
0.07692307692 + -0.07692307692 + 0.9230769231x + x2 = 0 + -0.07692307692

Combine like terms: 0.07692307692 + -0.07692307692 = 0.00000000000
0.00000000000 + 0.9230769231x + x2 = 0 + -0.07692307692
0.9230769231x + x2 = 0 + -0.07692307692

Combine like terms: 0 + -0.07692307692 = -0.07692307692
0.9230769231x + x2 = -0.07692307692

The x term is 0.9230769231x.  Take half its coefficient (0.4615384616).
Square it (0.2130177515) and add it to both sides.

Add '0.2130177515' to each side of the equation.
0.9230769231x + 0.2130177515 + x2 = -0.07692307692 + 0.2130177515

Reorder the terms:
0.2130177515 + 0.9230769231x + x2 = -0.07692307692 + 0.2130177515

Combine like terms: -0.07692307692 + 0.2130177515 = 0.13609467458
0.2130177515 + 0.9230769231x + x2 = 0.13609467458

Factor a perfect square on the left side:
(x + 0.4615384616)(x + 0.4615384616) = 0.13609467458

Calculate the square root of the right side: 0.368910117

Break this problem into two subproblems by setting 
(x + 0.4615384616) equal to 0.368910117 and -0.368910117.

Subproblem 1

x + 0.4615384616 = 0.368910117 Simplifying x + 0.4615384616 = 0.368910117 Reorder the terms: 0.4615384616 + x = 0.368910117 Solving 0.4615384616 + x = 0.368910117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4615384616' to each side of the equation. 0.4615384616 + -0.4615384616 + x = 0.368910117 + -0.4615384616 Combine like terms: 0.4615384616 + -0.4615384616 = 0.0000000000 0.0000000000 + x = 0.368910117 + -0.4615384616 x = 0.368910117 + -0.4615384616 Combine like terms: 0.368910117 + -0.4615384616 = -0.0926283446 x = -0.0926283446 Simplifying x = -0.0926283446

Subproblem 2

x + 0.4615384616 = -0.368910117 Simplifying x + 0.4615384616 = -0.368910117 Reorder the terms: 0.4615384616 + x = -0.368910117 Solving 0.4615384616 + x = -0.368910117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4615384616' to each side of the equation. 0.4615384616 + -0.4615384616 + x = -0.368910117 + -0.4615384616 Combine like terms: 0.4615384616 + -0.4615384616 = 0.0000000000 0.0000000000 + x = -0.368910117 + -0.4615384616 x = -0.368910117 + -0.4615384616 Combine like terms: -0.368910117 + -0.4615384616 = -0.8304485786 x = -0.8304485786 Simplifying x = -0.8304485786

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.0926283446, -0.8304485786}

See similar equations:

| 4(5xy+6y)= | | 4x-116=-2x+40 | | R(4000)=-0.02x^2+24x | | 4x+14=3x+7 | | 180=63+3x | | 2(3x+2y)= | | 15=(x-5)*(x-3) | | -5.2(x-2.25)=15.6 | | 130=8x+10 | | (2xy-2x)/(y-1) | | 2.625=7/8(b-5) | | x+3-6x-18=5x^2-9 | | 5-9[3-(2y-5)]= | | 2*3x=2x+6 | | COS(3*x)=0 | | 4x+2x-2+x=9 | | -2(-6v-4u+5)= | | 12x/7=30/4 | | 67.8=6(x+3.2) | | 2x-17=-x+152 | | W(x+8)=-3(x+3) | | 7y-4=-3+11 | | 1615=19(x+30) | | 4+3x=7+-6 | | 6x=21x+105 | | 1+-x=8 | | 2/9=10/a | | 1/5x=125 | | 3(y-6)+2y=5(y+1.5) | | -5(6-x)=15 | | 10000*0.05*N/N | | X/2=X-28 |

Equations solver categories