2x^2=5-11x

Simple and best practice solution for 2x^2=5-11x 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=5-11x equation:


Simplifying
2x2 = 5 + -11x

Solving
2x2 = 5 + -11x

Solving for variable 'x'.

Reorder the terms:
-5 + 11x + 2x2 = 5 + -11x + -5 + 11x

Reorder the terms:
-5 + 11x + 2x2 = 5 + -5 + -11x + 11x

Combine like terms: 5 + -5 = 0
-5 + 11x + 2x2 = 0 + -11x + 11x
-5 + 11x + 2x2 = -11x + 11x

Combine like terms: -11x + 11x = 0
-5 + 11x + 2x2 = 0

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

Divide each side by '2'.
-2.5 + 5.5x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 5.5x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 5.5x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 5.5x + x2 = 0 + 2.5
5.5x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
5.5x + x2 = 2.5

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 = 2.5 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = 2.5 + 7.5625

Combine like terms: 2.5 + 7.5625 = 10.0625
7.5625 + 5.5x + x2 = 10.0625

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 10.0625

Calculate the square root of the right side: 3.172144385

Break this problem into two subproblems by setting 
(x + 2.75) equal to 3.172144385 and -3.172144385.

Subproblem 1

x + 2.75 = 3.172144385 Simplifying x + 2.75 = 3.172144385 Reorder the terms: 2.75 + x = 3.172144385 Solving 2.75 + x = 3.172144385 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 = 3.172144385 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 3.172144385 + -2.75 x = 3.172144385 + -2.75 Combine like terms: 3.172144385 + -2.75 = 0.422144385 x = 0.422144385 Simplifying x = 0.422144385

Subproblem 2

x + 2.75 = -3.172144385 Simplifying x + 2.75 = -3.172144385 Reorder the terms: 2.75 + x = -3.172144385 Solving 2.75 + x = -3.172144385 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 = -3.172144385 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -3.172144385 + -2.75 x = -3.172144385 + -2.75 Combine like terms: -3.172144385 + -2.75 = -5.922144385 x = -5.922144385 Simplifying x = -5.922144385

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.422144385, -5.922144385}

See similar equations:

| 2x^2+11=5 | | 2n+n=27 | | 4t-1=5t+25 | | (9x+4y)= | | 4(-3y-12)-3y=-3 | | 2x+x=24258 | | 118+12x=3x-98 | | (10x+8x^5-2)+(12+x-6x^4)+(-x^4+x^2)= | | 8-4/5=22 | | (x-6y)(7x+2y)= | | 8x-11(-2)=-8 | | 3t-1=4t+6 | | 7x-3(2x-7)=70 | | 3+42x=21x+6 | | 1/14*378 | | 7x-3(2x-7)=20 | | -3/11p=-2 | | -69-3x=71+2x | | 7/8=7×1/8 | | -65+4x=61+11x | | -3/13p=-8 | | 4ex=10 | | -36=-10-2x | | 50+15x=110 | | ex=15 | | x+x+43=101 | | 43+(x*x)=101 | | -6x-60=32-10x | | 8y+1-5y=1+2y-7 | | 11x-9=3x+6 | | 43(x-x)=101 | | 8+6=4816 |

Equations solver categories