2x^2-9x-34=-11

Simple and best practice solution for 2x^2-9x-34=-11 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^2-9x-34=-11 equation:


Simplifying
2x2 + -9x + -34 = -11

Reorder the terms:
-34 + -9x + 2x2 = -11

Solving
-34 + -9x + 2x2 = -11

Solving for variable 'x'.

Reorder the terms:
-34 + 11 + -9x + 2x2 = -11 + 11

Combine like terms: -34 + 11 = -23
-23 + -9x + 2x2 = -11 + 11

Combine like terms: -11 + 11 = 0
-23 + -9x + 2x2 = 0

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

Divide each side by '2'.
-11.5 + -4.5x + x2 = 0

Move the constant term to the right:

Add '11.5' to each side of the equation.
-11.5 + -4.5x + 11.5 + x2 = 0 + 11.5

Reorder the terms:
-11.5 + 11.5 + -4.5x + x2 = 0 + 11.5

Combine like terms: -11.5 + 11.5 = 0.0
0.0 + -4.5x + x2 = 0 + 11.5
-4.5x + x2 = 0 + 11.5

Combine like terms: 0 + 11.5 = 11.5
-4.5x + x2 = 11.5

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = 11.5 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = 11.5 + 5.0625

Combine like terms: 11.5 + 5.0625 = 16.5625
5.0625 + -4.5x + x2 = 16.5625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 16.5625

Calculate the square root of the right side: 4.069705149

Break this problem into two subproblems by setting 
(x + -2.25) equal to 4.069705149 and -4.069705149.

Subproblem 1

x + -2.25 = 4.069705149 Simplifying x + -2.25 = 4.069705149 Reorder the terms: -2.25 + x = 4.069705149 Solving -2.25 + x = 4.069705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 4.069705149 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 4.069705149 + 2.25 x = 4.069705149 + 2.25 Combine like terms: 4.069705149 + 2.25 = 6.319705149 x = 6.319705149 Simplifying x = 6.319705149

Subproblem 2

x + -2.25 = -4.069705149 Simplifying x + -2.25 = -4.069705149 Reorder the terms: -2.25 + x = -4.069705149 Solving -2.25 + x = -4.069705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -4.069705149 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -4.069705149 + 2.25 x = -4.069705149 + 2.25 Combine like terms: -4.069705149 + 2.25 = -1.819705149 x = -1.819705149 Simplifying x = -1.819705149

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.319705149, -1.819705149}

See similar equations:

| 4[t+3]=0 | | 4x+2x=28 | | 25(y+10)-15y=270 | | X^3+11x^2+19x-40=0 | | 5(y+6)+3y=54 | | z=-3-j | | 4w+18+2w=12 | | 2x^3-2x^2-24x= | | -3.9x-2(-9.2x)= | | 108=9n+8 | | 13x+48=24x+47 | | 5+x+2x-5=36 | | 3.5+.25a=20 | | 3.5+.25a=0 | | 5n+1=45 | | 3.5+.25a=25 | | 3(x+2)+3=-3 | | 12ab-4b+8ab^2= | | 8(y-2)=6y+14 | | f(x)=2x^2-3xf(2n) | | -x^2+x=2 | | 10(y+4)-5=5y+50 | | 9.4x-3(5.5x)= | | 8x-27=-8x-40 | | x^2(x+7)=7x^2+8 | | -8(d+3)= | | (5x)+(2x+20)+(3x)=180 | | -9y-2=8y-4 | | 4(y+3)=y+6 | | y-5=-6(x-0) | | 2(y+5)+3y+10=60 | | k+39=60-3x |

Equations solver categories