-x^2-14x+2=0

Simple and best practice solution for -x^2-14x+2=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^2-14x+2=0 equation:


Simplifying
-1x2 + -14x + 2 = 0

Reorder the terms:
2 + -14x + -1x2 = 0

Solving
2 + -14x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-2 + 14x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 14x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 14x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 14x + x2 = 0 + 2
14x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
14x + x2 = 2

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 = 2 + 49

Reorder the terms:
49 + 14x + x2 = 2 + 49

Combine like terms: 2 + 49 = 51
49 + 14x + x2 = 51

Factor a perfect square on the left side:
(x + 7)(x + 7) = 51

Calculate the square root of the right side: 7.141428429

Break this problem into two subproblems by setting 
(x + 7) equal to 7.141428429 and -7.141428429.

Subproblem 1

x + 7 = 7.141428429 Simplifying x + 7 = 7.141428429 Reorder the terms: 7 + x = 7.141428429 Solving 7 + x = 7.141428429 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 = 7.141428429 + -7 Combine like terms: 7 + -7 = 0 0 + x = 7.141428429 + -7 x = 7.141428429 + -7 Combine like terms: 7.141428429 + -7 = 0.141428429 x = 0.141428429 Simplifying x = 0.141428429

Subproblem 2

x + 7 = -7.141428429 Simplifying x + 7 = -7.141428429 Reorder the terms: 7 + x = -7.141428429 Solving 7 + x = -7.141428429 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 = -7.141428429 + -7 Combine like terms: 7 + -7 = 0 0 + x = -7.141428429 + -7 x = -7.141428429 + -7 Combine like terms: -7.141428429 + -7 = -14.141428429 x = -14.141428429 Simplifying x = -14.141428429

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.141428429, -14.141428429}

See similar equations:

| 3(x-7)=138+3x | | 17+2x=312+5x | | 18+2n=4n | | 16-5x=-7x | | 6+j=14 | | t-(-9)=5 | | 3n+17=n+1 | | 7=5y-4x | | 18x^3-15x^2-9x= | | 16-5x=7x | | -4.8x+1.3=-2.7 | | 1-j=(-4) | | 16+4.5h=13+5.75h | | (7X-2)+(7X+5)= | | (3/5)x=2(x-1) | | -6d=18 | | q-(-9)=3 | | X=3(2w-1)-2(w-4) | | 2(x-4)=2(2x+5) | | 4=(-2)+u | | 12=-2(q+5) | | (-7)=1+s | | 0.0000019= | | 7/8÷3/5 | | 4x+7y=36 | | 4X+-7Y=36 | | 3m+6=3 | | 4x(6x-4)=8-12x | | 56+9x=164 | | 5(5x-3)+8=-3 | | 3x/4=x/2 | | 9x-13=8x+8 |

Equations solver categories