-x^2+14x=38

Simple and best practice solution for -x^2+14x=38 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=38 equation:


Simplifying
-1x2 + 14x = 38

Reorder the terms:
14x + -1x2 = 38

Solving
14x + -1x2 = 38

Solving for variable 'x'.

Reorder the terms:
-38 + 14x + -1x2 = 38 + -38

Combine like terms: 38 + -38 = 0
-38 + 14x + -1x2 = 0

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

Divide each side by '-1'.
38 + -14x + x2 = 0

Move the constant term to the right:

Add '-38' to each side of the equation.
38 + -14x + -38 + x2 = 0 + -38

Reorder the terms:
38 + -38 + -14x + x2 = 0 + -38

Combine like terms: 38 + -38 = 0
0 + -14x + x2 = 0 + -38
-14x + x2 = 0 + -38

Combine like terms: 0 + -38 = -38
-14x + x2 = -38

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 = -38 + 49

Reorder the terms:
49 + -14x + x2 = -38 + 49

Combine like terms: -38 + 49 = 11
49 + -14x + x2 = 11

Factor a perfect square on the left side:
(x + -7)(x + -7) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(x + -7) equal to 3.31662479 and -3.31662479.

Subproblem 1

x + -7 = 3.31662479 Simplifying x + -7 = 3.31662479 Reorder the terms: -7 + x = 3.31662479 Solving -7 + x = 3.31662479 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 = 3.31662479 + 7 Combine like terms: -7 + 7 = 0 0 + x = 3.31662479 + 7 x = 3.31662479 + 7 Combine like terms: 3.31662479 + 7 = 10.31662479 x = 10.31662479 Simplifying x = 10.31662479

Subproblem 2

x + -7 = -3.31662479 Simplifying x + -7 = -3.31662479 Reorder the terms: -7 + x = -3.31662479 Solving -7 + x = -3.31662479 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 = -3.31662479 + 7 Combine like terms: -7 + 7 = 0 0 + x = -3.31662479 + 7 x = -3.31662479 + 7 Combine like terms: -3.31662479 + 7 = 3.68337521 x = 3.68337521 Simplifying x = 3.68337521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.31662479, 3.68337521}

See similar equations:

| 7(x+9)-9=110 | | 2x+44=180 | | 9m-6m-2m=20 | | x/7=32/56 | | 5x+656789=0 | | 3x+5x=-7x | | 5x+4=5x+7 | | 5a+15+19= | | -3+12x-2=19 | | 94=d-77 | | B/56=2 | | 78=3j | | 64-x=7x | | 9b^2-36= | | 3-8k-20=71 | | 4x+4(2x+9)=12x+36 | | 25=19+c | | g=(5x-3)(2x+1) | | 11g+g+g+3g-15g=19 | | 63=d-18 | | U=y(a+b) | | 7t-15t-2t+16t=-8 | | 7q+5q-7q=20 | | 13x-yx=17 | | a-a+4a-a=15 | | 12n+3n-9n-5n=20 | | -27w=-648 | | 2x^2-18x-364=0 | | 12u=552 | | 4s-2s-s=18 | | 4m-2m-m=12 | | 21p=924 |

Equations solver categories