x^2+x=1200

Simple and best practice solution for x^2+x=1200 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+x=1200 equation:


Simplifying
x2 + x = 1200

Reorder the terms:
x + x2 = 1200

Solving
x + x2 = 1200

Solving for variable 'x'.

Reorder the terms:
-1200 + x + x2 = 1200 + -1200

Combine like terms: 1200 + -1200 = 0
-1200 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1200' to each side of the equation.
-1200 + x + 1200 + x2 = 0 + 1200

Reorder the terms:
-1200 + 1200 + x + x2 = 0 + 1200

Combine like terms: -1200 + 1200 = 0
0 + x + x2 = 0 + 1200
x + x2 = 0 + 1200

Combine like terms: 0 + 1200 = 1200
x + x2 = 1200

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 1200 + 0.25

Reorder the terms:
0.25 + x + x2 = 1200 + 0.25

Combine like terms: 1200 + 0.25 = 1200.25
0.25 + x + x2 = 1200.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1200.25

Calculate the square root of the right side: 34.644624403

Break this problem into two subproblems by setting 
(x + 0.5) equal to 34.644624403 and -34.644624403.

Subproblem 1

x + 0.5 = 34.644624403 Simplifying x + 0.5 = 34.644624403 Reorder the terms: 0.5 + x = 34.644624403 Solving 0.5 + x = 34.644624403 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 34.644624403 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 34.644624403 + -0.5 x = 34.644624403 + -0.5 Combine like terms: 34.644624403 + -0.5 = 34.144624403 x = 34.144624403 Simplifying x = 34.144624403

Subproblem 2

x + 0.5 = -34.644624403 Simplifying x + 0.5 = -34.644624403 Reorder the terms: 0.5 + x = -34.644624403 Solving 0.5 + x = -34.644624403 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -34.644624403 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -34.644624403 + -0.5 x = -34.644624403 + -0.5 Combine like terms: -34.644624403 + -0.5 = -35.144624403 x = -35.144624403 Simplifying x = -35.144624403

Solution

The solution to the problem is based on the solutions from the subproblems. x = {34.144624403, -35.144624403}

See similar equations:

| Sen(2x)=sen(5x) | | ln(x)+ln(x-6)=ln(7x-40) | | −​4​​/1​​a−4=​4​​/7​​a−3 | | x*3+170=x*10-5 | | (x^3)+(y^3)=0 | | 8x-6=5x-3 | | 2(X-2x)=15 | | -8+3x=-24+17 | | -15x^2+82x-95=0 | | 3x+4x+5x+6x=360 | | 5x(5+8)= | | 4x(14-15)= | | 5x(4+3)= | | 4ab+8b= | | 6+35x=20x+33 | | x+x-1=0 | | 3x*-2=8-2X | | 3(x+2)-2(x-i)=11 | | 5x(5+3)= | | 2*2s/45-5 | | 7x(5+-3)= | | 2x(7+-3)= | | 6p+6=66 | | 7x-20=6x+7 | | 21.23y=83.60 | | 3(y+1)=4y-2 | | P+6=66 | | 4.45x+3.43y=84.92 | | 4.45x+3.43=84.92 | | 3.14x^2*2=0.8 | | 2(2x-5)+2=x+7findx | | 15x-12=9x+6 |

Equations solver categories