2x^2=3+11x

Simple and best practice solution for 2x^2=3+11x 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=3+11x equation:


Simplifying
2x2 = 3 + 11x

Solving
2x2 = 3 + 11x

Solving for variable 'x'.

Reorder the terms:
-3 + -11x + 2x2 = 3 + 11x + -3 + -11x

Reorder the terms:
-3 + -11x + 2x2 = 3 + -3 + 11x + -11x

Combine like terms: 3 + -3 = 0
-3 + -11x + 2x2 = 0 + 11x + -11x
-3 + -11x + 2x2 = 11x + -11x

Combine like terms: 11x + -11x = 0
-3 + -11x + 2x2 = 0

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

Divide each side by '2'.
-1.5 + -5.5x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -5.5x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -5.5x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -5.5x + x2 = 0 + 1.5
-5.5x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-5.5x + x2 = 1.5

The x term is -5.5x.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5x + 7.5625 + x2 = 1.5 + 7.5625

Reorder the terms:
7.5625 + -5.5x + x2 = 1.5 + 7.5625

Combine like terms: 1.5 + 7.5625 = 9.0625
7.5625 + -5.5x + x2 = 9.0625

Factor a perfect square on the left side:
(x + -2.75)(x + -2.75) = 9.0625

Calculate the square root of the right side: 3.010398645

Break this problem into two subproblems by setting 
(x + -2.75) equal to 3.010398645 and -3.010398645.

Subproblem 1

x + -2.75 = 3.010398645 Simplifying x + -2.75 = 3.010398645 Reorder the terms: -2.75 + x = 3.010398645 Solving -2.75 + x = 3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = 3.010398645 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = 3.010398645 + 2.75 x = 3.010398645 + 2.75 Combine like terms: 3.010398645 + 2.75 = 5.760398645 x = 5.760398645 Simplifying x = 5.760398645

Subproblem 2

x + -2.75 = -3.010398645 Simplifying x + -2.75 = -3.010398645 Reorder the terms: -2.75 + x = -3.010398645 Solving -2.75 + x = -3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = -3.010398645 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = -3.010398645 + 2.75 x = -3.010398645 + 2.75 Combine like terms: -3.010398645 + 2.75 = -0.260398645 x = -0.260398645 Simplifying x = -0.260398645

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.760398645, -0.260398645}

See similar equations:

| 5x=y+15 | | w^2+12w=1 | | 54d=35 | | 4x+5=-3+2x+22 | | 3.5=7 | | -(2x-3)=-3(x+2) | | 3(2x)+4(5)= | | -2x+1y+3z=7 | | -8u+10=-142 | | 12+7n=8(1+n) | | 5.5=2x | | 2x^2+28x=-80 | | 3(2x-5)=4(x-7) | | 5x-2(x+2)=10 | | 8-9x-2=-58+6x-11 | | 2(3x)-11=9 | | (x-14)(-3x+10)=0 | | 3x+87=123 | | 6x+3(11)=78 | | 8x-3=6x+37 | | 18+4x=78+x | | 3x-13=2-2x | | 2(5q+2)= | | (2x^4y)(5x^3y)= | | -6x+-4y=-89 | | 2y=12-4(6+y) | | -0.5x+5=-x+7 | | 62376423642354+25345237645= | | 48+6a= | | y-5=-4(x-(-1)) | | 16-3y=y | | -4h^2-8h=-28 |

Equations solver categories