x^2-12=-14x

Simple and best practice solution for x^2-12=-14x 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^2-12=-14x equation:


Simplifying
x2 + -12 = -14x

Reorder the terms:
-12 + x2 = -14x

Solving
-12 + x2 = -14x

Solving for variable 'x'.

Reorder the terms:
-12 + 14x + x2 = -14x + 14x

Combine like terms: -14x + 14x = 0
-12 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 14x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 14x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 14x + x2 = 0 + 12
14x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
14x + x2 = 12

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = 12 + 49

Reorder the terms:
49 + 14x + x2 = 12 + 49

Combine like terms: 12 + 49 = 61
49 + 14x + x2 = 61

Factor a perfect square on the left side:
(x + 7)(x + 7) = 61

Calculate the square root of the right side: 7.810249676

Break this problem into two subproblems by setting 
(x + 7) equal to 7.810249676 and -7.810249676.

Subproblem 1

x + 7 = 7.810249676 Simplifying x + 7 = 7.810249676 Reorder the terms: 7 + x = 7.810249676 Solving 7 + x = 7.810249676 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 7.810249676 + -7 Combine like terms: 7 + -7 = 0 0 + x = 7.810249676 + -7 x = 7.810249676 + -7 Combine like terms: 7.810249676 + -7 = 0.810249676 x = 0.810249676 Simplifying x = 0.810249676

Subproblem 2

x + 7 = -7.810249676 Simplifying x + 7 = -7.810249676 Reorder the terms: 7 + x = -7.810249676 Solving 7 + x = -7.810249676 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -7.810249676 + -7 Combine like terms: 7 + -7 = 0 0 + x = -7.810249676 + -7 x = -7.810249676 + -7 Combine like terms: -7.810249676 + -7 = -14.810249676 x = -14.810249676 Simplifying x = -14.810249676

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.810249676, -14.810249676}

See similar equations:

| 7x^5+49x^2+28x= | | 5p^3+5p^2-9p-9=0 | | x/3.4=20.8 | | 6x^4a^2+4x^2a^3= | | 6b^2-b-12= | | -4x-0=-8 | | 5a(4+2b-a)= | | f(x)=4x^2-9x+4 | | Y=-10(5)+1 | | -29=5f-6f | | -59=-10x+1 | | Y=-10(7)+1 | | in(3x+7)=1 | | 2(4x-2)-7x=1 | | 13x+17y=1 | | 26x-6-17x+2=19x-6-10x+15 | | 10x+5y=470 | | lnk=2.13 | | V=5*2*3 | | 3x+1y+7-6-2y=-14 | | lnx=2.13 | | 5y-5+y+33=6y+30-2y | | V=5*2*7 | | 11x+9y=-30 | | V=5*2*5 | | 18x+36y=-42 | | (X+16)(x+4)=3 | | V=527 | | Ln(5x+2)=15 | | X^2+20x+61=0 | | X^2+4c=-1 | | x+3+4x=16 |

Equations solver categories