x^2-14x=-18

Simple and best practice solution for x^2-14x=-18 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=-18 equation:


Simplifying
x2 + -14x = -18

Reorder the terms:
-14x + x2 = -18

Solving
-14x + x2 = -18

Solving for variable 'x'.

Reorder the terms:
18 + -14x + x2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -14x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -14x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -14x + x2 = 0 + -18
-14x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-14x + x2 = -18

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 = -18 + 49

Reorder the terms:
49 + -14x + x2 = -18 + 49

Combine like terms: -18 + 49 = 31
49 + -14x + x2 = 31

Factor a perfect square on the left side:
(x + -7)(x + -7) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(x + -7) equal to 5.567764363 and -5.567764363.

Subproblem 1

x + -7 = 5.567764363 Simplifying x + -7 = 5.567764363 Reorder the terms: -7 + x = 5.567764363 Solving -7 + x = 5.567764363 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 = 5.567764363 + 7 Combine like terms: -7 + 7 = 0 0 + x = 5.567764363 + 7 x = 5.567764363 + 7 Combine like terms: 5.567764363 + 7 = 12.567764363 x = 12.567764363 Simplifying x = 12.567764363

Subproblem 2

x + -7 = -5.567764363 Simplifying x + -7 = -5.567764363 Reorder the terms: -7 + x = -5.567764363 Solving -7 + x = -5.567764363 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 = -5.567764363 + 7 Combine like terms: -7 + 7 = 0 0 + x = -5.567764363 + 7 x = -5.567764363 + 7 Combine like terms: -5.567764363 + 7 = 1.432235637 x = 1.432235637 Simplifying x = 1.432235637

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.567764363, 1.432235637}

See similar equations:

| 9(2x+3)=45 | | 4x^4+4x^2-1=0 | | 330=p*35 | | 4[x+2]=14-2[3-4x] | | b(11b+3)=8 | | 5.4+.02x=-1.4x+8.6 | | 4y=3+12 | | 2t+6t=8+2 | | x-5=x-.2x | | 12x-10=26 | | -[2z-(7z+4)]=4+(4z+3) | | 2x+-8y=-10 | | 0.9(x-9)+x=3 | | 8x-6=6y | | 5x+10x-3y-2y=30 | | 8-4x=4-6 | | 2(4m-7)= | | Y-0.5Y=0.5Y-0.5Y+220 | | -3x^2+12x-21=0 | | 3x+15=8x+60 | | (15*-15x)+4= | | Y-0.75Y=0.75Y-0.75Y+2200 | | -7k+9k-8=-10 | | -4x=-11+7 | | 23=3(x+5)-7x | | 10+3(-60*-5)= | | -4x=-11 | | 10+20x+(-10)=15x+(-5x)+90 | | 13p+12q+p-6q-5p= | | X+.33=1.3 | | 20=-12x+4y | | 10x-2y-3x-4y= |

Equations solver categories