x*(x+3)=222

Simple and best practice solution for x*(x+3)=222 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*(x+3)=222 equation:


Simplifying
x(x + 3) = 222

Reorder the terms:
x(3 + x) = 222
(3 * x + x * x) = 222
(3x + x2) = 222

Solving
3x + x2 = 222

Solving for variable 'x'.

Reorder the terms:
-222 + 3x + x2 = 222 + -222

Combine like terms: 222 + -222 = 0
-222 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '222' to each side of the equation.
-222 + 3x + 222 + x2 = 0 + 222

Reorder the terms:
-222 + 222 + 3x + x2 = 0 + 222

Combine like terms: -222 + 222 = 0
0 + 3x + x2 = 0 + 222
3x + x2 = 0 + 222

Combine like terms: 0 + 222 = 222
3x + x2 = 222

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 = 222 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 222 + 2.25

Combine like terms: 222 + 2.25 = 224.25
2.25 + 3x + x2 = 224.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 224.25

Calculate the square root of the right side: 14.974979132

Break this problem into two subproblems by setting 
(x + 1.5) equal to 14.974979132 and -14.974979132.

Subproblem 1

x + 1.5 = 14.974979132 Simplifying x + 1.5 = 14.974979132 Reorder the terms: 1.5 + x = 14.974979132 Solving 1.5 + x = 14.974979132 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 = 14.974979132 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 14.974979132 + -1.5 x = 14.974979132 + -1.5 Combine like terms: 14.974979132 + -1.5 = 13.474979132 x = 13.474979132 Simplifying x = 13.474979132

Subproblem 2

x + 1.5 = -14.974979132 Simplifying x + 1.5 = -14.974979132 Reorder the terms: 1.5 + x = -14.974979132 Solving 1.5 + x = -14.974979132 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 = -14.974979132 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -14.974979132 + -1.5 x = -14.974979132 + -1.5 Combine like terms: -14.974979132 + -1.5 = -16.474979132 x = -16.474979132 Simplifying x = -16.474979132

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.474979132, -16.474979132}

See similar equations:

| T+5=16-10t | | x*(x+1)=291 | | 240-52x-2x^2=114 | | -3p-2(6-5p)=2(p-5)-42 | | 100=12.56*4 | | A+b+c=a*b*c-5 | | (3x+1)(5)(2x+6)=a | | (12-2x)(20-x)=114 | | 291=x*x+1 | | 3(x-y)=15-3x | | 0.8x+y=9.6 | | a-b=a+b | | 1050.016=59.66*w | | 2x-7=10x+3 | | 266=x*x+1 | | 3x-10y=11 | | -6(x+2)+4x+6=6x+9 | | 5d-13=11-3d | | 27=3x+7x | | -5j+(2j)+3= | | 190=x*x+1 | | -10+8j=10+10j | | 0.5(d-3)=0.4d+6-1+0.6d | | 2(3x-7)=-63 | | 3(1+6x)=129 | | 100=3.14*4h | | 100=3.14*4hj | | -3+5x=-8 | | 4(2y+6)-3(-2y+2)=4 | | 364=x*x+1 | | -5-2x=-27 | | 2x-4-3x=4x+5 |

Equations solver categories