2x^2+7=14x

Simple and best practice solution for 2x^2+7=14x 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+7=14x equation:


Simplifying
2x2 + 7 = 14x

Reorder the terms:
7 + 2x2 = 14x

Solving
7 + 2x2 = 14x

Solving for variable 'x'.

Reorder the terms:
7 + -14x + 2x2 = 14x + -14x

Combine like terms: 14x + -14x = 0
7 + -14x + 2x2 = 0

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

Divide each side by '2'.
3.5 + -7x + x2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + -7x + -3.5 + x2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + -7x + x2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -7x + x2 = 0 + -3.5
-7x + x2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-7x + x2 = -3.5

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 = -3.5 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -3.5 + 12.25

Combine like terms: -3.5 + 12.25 = 8.75
12.25 + -7x + x2 = 8.75

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 8.75

Calculate the square root of the right side: 2.958039892

Break this problem into two subproblems by setting 
(x + -3.5) equal to 2.958039892 and -2.958039892.

Subproblem 1

x + -3.5 = 2.958039892 Simplifying x + -3.5 = 2.958039892 Reorder the terms: -3.5 + x = 2.958039892 Solving -3.5 + x = 2.958039892 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 = 2.958039892 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 2.958039892 + 3.5 x = 2.958039892 + 3.5 Combine like terms: 2.958039892 + 3.5 = 6.458039892 x = 6.458039892 Simplifying x = 6.458039892

Subproblem 2

x + -3.5 = -2.958039892 Simplifying x + -3.5 = -2.958039892 Reorder the terms: -3.5 + x = -2.958039892 Solving -3.5 + x = -2.958039892 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 = -2.958039892 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -2.958039892 + 3.5 x = -2.958039892 + 3.5 Combine like terms: -2.958039892 + 3.5 = 0.541960108 x = 0.541960108 Simplifying x = 0.541960108

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.458039892, 0.541960108}

See similar equations:

| (c^2+11c+18)/(c+2) | | 3/b-8+7/b+3 | | 3/2y-1/3=5/4y+1/8 | | 16-8+4= | | -2/5x=-3 | | 8x-14=x^2+11 | | log(22-x)=logx-1 | | (7ln(x+8))=(x^2) | | 5/2x-y=0 | | 2x+3+7x=39 | | y=576.1x+9673.2 | | 5/3-6i | | 5ex=12 | | 2x+3+7x=30 | | h=5t^2+5t+30 | | ln(3x-2)=ln(x-1) | | 98+5=67 | | 2(4a-9)+3=5a-b | | x^2+5+5=0 | | -2(x+6)=-4x+10 | | (5b/4a^2)/(b^4/8a^4b) | | 9-2x-7-4x=4 | | 36a^2-36a+96=0 | | x=56-2(40-2x) | | (5b/4a^2)(8a^4b/b^4) | | (5b/4a^2)(8a^4b/b^4) | | x=5-2(40-2x) | | 1/x-6/x^2 | | x=56-2y | | y=-10*0+9 | | -9=-10b-9 | | 1/2x-8-3/x-4 |

Equations solver categories