2x^2+x-14=

Simple and best practice solution for 2x^2+x-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 2x^2+x-14= equation:


Simplifying
2x2 + x + -14 = 0

Reorder the terms:
-14 + x + 2x2 = 0

Solving
-14 + x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-7 + 0.5x + x2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + 0.5x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + 0.5x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 0.5x + x2 = 0 + 7
0.5x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
0.5x + x2 = 7

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.
0.5x + 0.25 + x2 = 7 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = 7 + 0.25

Combine like terms: 7 + 0.25 = 7.25
0.25 + 0.5x + x2 = 7.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(x + 0.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + 0.5 = 2.692582404 Simplifying x + 0.5 = 2.692582404 Reorder the terms: 0.5 + x = 2.692582404 Solving 0.5 + x = 2.692582404 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 = 2.692582404 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.692582404 + -0.5 x = 2.692582404 + -0.5 Combine like terms: 2.692582404 + -0.5 = 2.192582404 x = 2.192582404 Simplifying x = 2.192582404

Subproblem 2

x + 0.5 = -2.692582404 Simplifying x + 0.5 = -2.692582404 Reorder the terms: 0.5 + x = -2.692582404 Solving 0.5 + x = -2.692582404 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 = -2.692582404 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.692582404 + -0.5 x = -2.692582404 + -0.5 Combine like terms: -2.692582404 + -0.5 = -3.192582404 x = -3.192582404 Simplifying x = -3.192582404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.192582404, -3.192582404}

See similar equations:

| 4/5r=10 | | 6y+3x=14 | | 63r+28s= | | 2x+3+5X-3= | | 15y-12y^3=0 | | 49y=1/7 | | 1ox-3x+1=24 | | Y=-x^2-6x-6 | | (x^10y^4)(x^13y)= | | f=11gh*h | | x^2+2x-4=-4 | | 4timesd=12 | | x^2-8x+y^2-10y-27=0 | | 5y+2(y-9)=4(y+1)-2 | | 2mp-4x=g | | 3-10x-1/5=1 | | 3x*3x=300 | | (y^10z^3)(y^10z)= | | -5(4x+6)=20x+30 | | 12a^2+25a+12=0 | | (2/5)x-(7/10)x=1 | | 10-4x=3-6x | | (8z^4)(6z)= | | 2y-5=9y+9 | | ln(x-2)+ln(x)=ln(5x-12) | | 1235c-08550x=78668c+866459x | | (4a+3)(5a-3)=0 | | (x^3+4x^2-3x+7)(x^2-5)=0 | | (x^3+4x-3x+7)(x^2-5)=0 | | 3(x+6)3(x+6)=36 | | (X-1/2)^2 | | 144x^2-168x+49=0 |

Equations solver categories