x^2+3x=260

Simple and best practice solution for x^2+3x=260 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+3x=260 equation:


Simplifying
x2 + 3x = 260

Reorder the terms:
3x + x2 = 260

Solving
3x + x2 = 260

Solving for variable 'x'.

Reorder the terms:
-260 + 3x + x2 = 260 + -260

Combine like terms: 260 + -260 = 0
-260 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '260' to each side of the equation.
-260 + 3x + 260 + x2 = 0 + 260

Reorder the terms:
-260 + 260 + 3x + x2 = 0 + 260

Combine like terms: -260 + 260 = 0
0 + 3x + x2 = 0 + 260
3x + x2 = 0 + 260

Combine like terms: 0 + 260 = 260
3x + x2 = 260

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 260 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 260 + 2.25

Combine like terms: 260 + 2.25 = 262.25
2.25 + 3x + x2 = 262.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 262.25

Calculate the square root of the right side: 16.194134741

Break this problem into two subproblems by setting 
(x + 1.5) equal to 16.194134741 and -16.194134741.

Subproblem 1

x + 1.5 = 16.194134741 Simplifying x + 1.5 = 16.194134741 Reorder the terms: 1.5 + x = 16.194134741 Solving 1.5 + x = 16.194134741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 16.194134741 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 16.194134741 + -1.5 x = 16.194134741 + -1.5 Combine like terms: 16.194134741 + -1.5 = 14.694134741 x = 14.694134741 Simplifying x = 14.694134741

Subproblem 2

x + 1.5 = -16.194134741 Simplifying x + 1.5 = -16.194134741 Reorder the terms: 1.5 + x = -16.194134741 Solving 1.5 + x = -16.194134741 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -16.194134741 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -16.194134741 + -1.5 x = -16.194134741 + -1.5 Combine like terms: -16.194134741 + -1.5 = -17.694134741 x = -17.694134741 Simplifying x = -17.694134741

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.694134741, -17.694134741}

See similar equations:

| 5(7x-5)=13-3x | | (3v+5)(3+v)=0 | | sin(10x)=0 | | -3x=4(3x-2) | | 12z-8=5z+13 | | 28+9q=34 | | 3(2y+4)=5(4y+y) | | 3z(z)+3z-9=0 | | 5(m+4)-6m=-24 | | 2(x+6)+9=2x+5 | | 23=8y+19 | | 5a=248 | | 5(20-d)=3(2d-7) | | 5a=240 | | 24y+18=24 | | G(x)=2x^2+17X-9 | | 2(x-3)-(x-2)=7-2(3x+1) | | 4x^3-15x^2+18x-6.9=0 | | -27x-33= | | cos*3*x+8*cos^3*x=0 | | -10b^2+25b= | | 5(20d)=3(2d-7) | | 3(p-12)=27 | | 5n^2+4=9n | | S^2-35=0 | | 25+17-4*3= | | 2=18y-6 | | y=9+-5 | | 6y=11-3x | | S^4-4s-35=0 | | 40=0+4x | | y=-7+-5 |

Equations solver categories