2*x^2+14*x=5

Simple and best practice solution for 2*x^2+14*x=5 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 2*x^2+14*x=5 equation:


Simplifying
2x2 + 14x = 5

Reorder the terms:
14x + 2x2 = 5

Solving
14x + 2x2 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 14x + 2x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 14x + 2x2 = 0

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

Divide each side by '2'.
-2.5 + 7x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 7x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 7x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 7x + x2 = 0 + 2.5
7x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
7x + x2 = 2.5

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 2.5 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 2.5 + 12.25

Combine like terms: 2.5 + 12.25 = 14.75
12.25 + 7x + x2 = 14.75

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 14.75

Calculate the square root of the right side: 3.840572874

Break this problem into two subproblems by setting 
(x + 3.5) equal to 3.840572874 and -3.840572874.

Subproblem 1

x + 3.5 = 3.840572874 Simplifying x + 3.5 = 3.840572874 Reorder the terms: 3.5 + x = 3.840572874 Solving 3.5 + x = 3.840572874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 3.840572874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 3.840572874 + -3.5 x = 3.840572874 + -3.5 Combine like terms: 3.840572874 + -3.5 = 0.340572874 x = 0.340572874 Simplifying x = 0.340572874

Subproblem 2

x + 3.5 = -3.840572874 Simplifying x + 3.5 = -3.840572874 Reorder the terms: 3.5 + x = -3.840572874 Solving 3.5 + x = -3.840572874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -3.840572874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -3.840572874 + -3.5 x = -3.840572874 + -3.5 Combine like terms: -3.840572874 + -3.5 = -7.340572874 x = -7.340572874 Simplifying x = -7.340572874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.340572874, -7.340572874}

See similar equations:

| 60d+420= | | 14x^2+35= | | -56/70= | | 25-7+3k=12 | | 5.8+x=16.5 | | 56/70= | | 7(f-17)=45 | | 5*x^2-35*x+10=0 | | 3(e-2)=-15 | | 9x-4=2(3x+4) | | 5*x^2-35*x+10=10 | | -5(t-2)+7t=6t-1 | | C=zv+y | | -339z=0 | | 2+3(x+1)=5x-((x-1)-2(3+5x)) | | t-9=12 | | -17+x=x+17 | | 3*x^2+6*x=21 | | 2xy+z=8fory | | 2n+-7=2n+-3 | | 7y+44=12y+12 | | 105/4= | | -2y+10=-2(3y+13) | | 4x-(2-x)=9[9-(1+3x-7)] | | 3d+8=29 | | 9-12x^2=1 | | -8(4+9x)=-14-77x | | 0.18(y-2)+0.08y=0.02y-0.03(50) | | 3x+2x+25=180 | | x-7=3x-29 | | 3.2-4.3=12.6k+14.5 | | d=(r)(t) |

Equations solver categories