160-7x=x^2+15x

Simple and best practice solution for 160-7x=x^2+15x 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 160-7x=x^2+15x equation:


Simplifying
160 + -7x = x2 + 15x

Reorder the terms:
160 + -7x = 15x + x2

Solving
160 + -7x = 15x + x2

Solving for variable 'x'.

Combine like terms: -7x + -15x = -22x
160 + -22x + -1x2 = 15x + x2 + -15x + -1x2

Reorder the terms:
160 + -22x + -1x2 = 15x + -15x + x2 + -1x2

Combine like terms: 15x + -15x = 0
160 + -22x + -1x2 = 0 + x2 + -1x2
160 + -22x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
160 + -22x + -1x2 = 0

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

Divide each side by '-1'.
-160 + 22x + x2 = 0

Move the constant term to the right:

Add '160' to each side of the equation.
-160 + 22x + 160 + x2 = 0 + 160

Reorder the terms:
-160 + 160 + 22x + x2 = 0 + 160

Combine like terms: -160 + 160 = 0
0 + 22x + x2 = 0 + 160
22x + x2 = 0 + 160

Combine like terms: 0 + 160 = 160
22x + x2 = 160

The x term is 22x.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22x + 121 + x2 = 160 + 121

Reorder the terms:
121 + 22x + x2 = 160 + 121

Combine like terms: 160 + 121 = 281
121 + 22x + x2 = 281

Factor a perfect square on the left side:
(x + 11)(x + 11) = 281

Calculate the square root of the right side: 16.763054614

Break this problem into two subproblems by setting 
(x + 11) equal to 16.763054614 and -16.763054614.

Subproblem 1

x + 11 = 16.763054614 Simplifying x + 11 = 16.763054614 Reorder the terms: 11 + x = 16.763054614 Solving 11 + x = 16.763054614 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 16.763054614 + -11 Combine like terms: 11 + -11 = 0 0 + x = 16.763054614 + -11 x = 16.763054614 + -11 Combine like terms: 16.763054614 + -11 = 5.763054614 x = 5.763054614 Simplifying x = 5.763054614

Subproblem 2

x + 11 = -16.763054614 Simplifying x + 11 = -16.763054614 Reorder the terms: 11 + x = -16.763054614 Solving 11 + x = -16.763054614 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = -16.763054614 + -11 Combine like terms: 11 + -11 = 0 0 + x = -16.763054614 + -11 x = -16.763054614 + -11 Combine like terms: -16.763054614 + -11 = -27.763054614 x = -27.763054614 Simplifying x = -27.763054614

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.763054614, -27.763054614}

See similar equations:

| 9m-4=-2m | | 12+4y=-4 | | 80x+6240-65x=6930 | | 16y-8(3y-8)=-88 | | 2(6y+3)+3(4y-8)=21 | | 16y-8(3y-8)=88 | | 80x+6240-65x=6939 | | 3x-20=5x-50 | | y+4=3(x+5) | | 3x+6-5(x+1)=7x+5 | | 2(4x-1)=12x | | y+5=3(x+4) | | .67x=y | | 6x+8=-5 | | 15AB+12BC+17AC=22 | | 15AB=22 | | 3p-3(3-4p)=5(p-4)-13 | | -2.5x+1.5x=2 | | 9+4(x-5)=8-8(x-5) | | 7+(-1.8)= | | 7[2-(4+6x)]-4x=-16+2(1-23x) | | 3y-7+y+31=5y+30-3y | | -5x+3(5x-1)=4x+8 | | 0.8n-1.6=1.2n+0.4 | | 4x+2.4(-1)=1.6 | | -6m+56-4(m-1)=8m-(7m-9)-3m+3 | | 3a+4a=2a-5 | | -70-35=-245 | | 3d+7=2(d-4) | | 4x(x+3)whenx=-2 | | A+B=15A | | 24x+7-26x=8-9 |

Equations solver categories