x(x+3)=14

Simple and best practice solution for x(x+3)=14 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)=14 equation:


Simplifying
x(x + 3) = 14

Reorder the terms:
x(3 + x) = 14
(3 * x + x * x) = 14
(3x + x2) = 14

Solving
3x + x2 = 14

Solving for variable 'x'.

Reorder the terms:
-14 + 3x + x2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + 3x + 14 + x2 = 0 + 14

Reorder the terms:
-14 + 14 + 3x + x2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 3x + x2 = 0 + 14
3x + x2 = 0 + 14

Combine like terms: 0 + 14 = 14
3x + x2 = 14

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 = 14 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 14 + 2.25

Combine like terms: 14 + 2.25 = 16.25
2.25 + 3x + x2 = 16.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 16.25

Calculate the square root of the right side: 4.031128874

Break this problem into two subproblems by setting 
(x + 1.5) equal to 4.031128874 and -4.031128874.

Subproblem 1

x + 1.5 = 4.031128874 Simplifying x + 1.5 = 4.031128874 Reorder the terms: 1.5 + x = 4.031128874 Solving 1.5 + x = 4.031128874 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 = 4.031128874 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 4.031128874 + -1.5 x = 4.031128874 + -1.5 Combine like terms: 4.031128874 + -1.5 = 2.531128874 x = 2.531128874 Simplifying x = 2.531128874

Subproblem 2

x + 1.5 = -4.031128874 Simplifying x + 1.5 = -4.031128874 Reorder the terms: 1.5 + x = -4.031128874 Solving 1.5 + x = -4.031128874 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 = -4.031128874 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -4.031128874 + -1.5 x = -4.031128874 + -1.5 Combine like terms: -4.031128874 + -1.5 = -5.531128874 x = -5.531128874 Simplifying x = -5.531128874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.531128874, -5.531128874}

See similar equations:

| x^2-5x-12=x+4 | | 0.2y+0.4(40-y)=10 | | W=M+Mbf | | 105-u=254 | | 35x-22x+6-18x=14-30x+32 | | 27-4=6k+8 | | 415x-6000-x^2=0 | | 5(2x+7)=-30+15 | | 0=-16t^2+14t+24 | | 2y-(-3y+4)=11 | | y=-16t^2+14t+24 | | 4(3x+1)=4x-8x | | -100p+00+99p=100 | | 10t+6t=128 | | 11/5(x-16/25)=0.33 | | 3x^2+3y^2+12x-30y+78=0solve | | 8x=7-19 | | f(3)=5x-7 | | 13+15=-4(4x-7) | | 3x+4y^2-4y+3=0 | | 11m+5m=-95 | | 9(6p-5)= | | 8=-3+u | | Log(5x)+log(8)=0 | | -3w-5w=22 | | 400+2304=c^2 | | 23+12x-18+15x=a | | (X^2-6/2)-(X^2-4/4)=5 | | X^2-10x-12y-23=0 | | X^2-6/2-X^2-4/4=5 | | 0=-16x^2+64x+6 | | -4n+8=3n-34 |

Equations solver categories