11x+x^2=30

Simple and best practice solution for 11x+x^2=30 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 11x+x^2=30 equation:


Simplifying
11x + x2 = 30

Solving
11x + x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + 11x + x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + 11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + 11x + 30 + x2 = 0 + 30

Reorder the terms:
-30 + 30 + 11x + x2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 11x + x2 = 0 + 30
11x + x2 = 0 + 30

Combine like terms: 0 + 30 = 30
11x + x2 = 30

The x term is 11x.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11x + 30.25 + x2 = 30 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 30 + 30.25

Combine like terms: 30 + 30.25 = 60.25
30.25 + 11x + x2 = 60.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 60.25

Calculate the square root of the right side: 7.762087348

Break this problem into two subproblems by setting 
(x + 5.5) equal to 7.762087348 and -7.762087348.

Subproblem 1

x + 5.5 = 7.762087348 Simplifying x + 5.5 = 7.762087348 Reorder the terms: 5.5 + x = 7.762087348 Solving 5.5 + x = 7.762087348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 7.762087348 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 7.762087348 + -5.5 x = 7.762087348 + -5.5 Combine like terms: 7.762087348 + -5.5 = 2.262087348 x = 2.262087348 Simplifying x = 2.262087348

Subproblem 2

x + 5.5 = -7.762087348 Simplifying x + 5.5 = -7.762087348 Reorder the terms: 5.5 + x = -7.762087348 Solving 5.5 + x = -7.762087348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -7.762087348 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -7.762087348 + -5.5 x = -7.762087348 + -5.5 Combine like terms: -7.762087348 + -5.5 = -13.262087348 x = -13.262087348 Simplifying x = -13.262087348

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.262087348, -13.262087348}

See similar equations:

| -3p+13=-5(3)+5(2p) | | 9x+3+-6x+-2=3x-1 | | 13s+21=4s | | 2v-2=-3(v-6) | | N=5+6p | | 4t-10=n | | 5(z+1)+14=19-2z+7z | | 5d+3-3a=-7 | | 6x+7+8x-1=5x+10-2x+18 | | 4a+(-4a)=0 | | 2(9+x)=36 | | 5z+15=4z+6 | | 4i(2-3i)(7+3i)=0 | | a+7.3=6.79 | | y=16*200+154 | | 2x-28+28=88+28 | | X-.16x=522.06 | | .5x-.8=6.7 | | 17b+5=3b | | y=16x+154 | | -8y=17+5(-5) | | 0.5(7-(8-6)2)-1= | | -2=4r+a | | 4+q=11 | | ln(4x^2-3x)=ln(8x-6)-ln(2x) | | -2r=4r+a | | (5u-3)-9=-6(-2u+3)-3u | | 11=6x-16 | | x+[x+20]+2[x+20]+30=180 | | 6=-3+2k | | -7(7+6x)=287 | | 6(t-4)=-12 |

Equations solver categories