2x^2=-73x-20

Simple and best practice solution for 2x^2=-73x-20 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=-73x-20 equation:


Simplifying
2x2 = -73x + -20

Reorder the terms:
2x2 = -20 + -73x

Solving
2x2 = -20 + -73x

Solving for variable 'x'.

Reorder the terms:
20 + 73x + 2x2 = -20 + -73x + 20 + 73x

Reorder the terms:
20 + 73x + 2x2 = -20 + 20 + -73x + 73x

Combine like terms: -20 + 20 = 0
20 + 73x + 2x2 = 0 + -73x + 73x
20 + 73x + 2x2 = -73x + 73x

Combine like terms: -73x + 73x = 0
20 + 73x + 2x2 = 0

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

Divide each side by '2'.
10 + 36.5x + x2 = 0

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 36.5x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + 36.5x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 36.5x + x2 = 0 + -10
36.5x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
36.5x + x2 = -10

The x term is 36.5x.  Take half its coefficient (18.25).
Square it (333.0625) and add it to both sides.

Add '333.0625' to each side of the equation.
36.5x + 333.0625 + x2 = -10 + 333.0625

Reorder the terms:
333.0625 + 36.5x + x2 = -10 + 333.0625

Combine like terms: -10 + 333.0625 = 323.0625
333.0625 + 36.5x + x2 = 323.0625

Factor a perfect square on the left side:
(x + 18.25)(x + 18.25) = 323.0625

Calculate the square root of the right side: 17.973939468

Break this problem into two subproblems by setting 
(x + 18.25) equal to 17.973939468 and -17.973939468.

Subproblem 1

x + 18.25 = 17.973939468 Simplifying x + 18.25 = 17.973939468 Reorder the terms: 18.25 + x = 17.973939468 Solving 18.25 + x = 17.973939468 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18.25' to each side of the equation. 18.25 + -18.25 + x = 17.973939468 + -18.25 Combine like terms: 18.25 + -18.25 = 0.00 0.00 + x = 17.973939468 + -18.25 x = 17.973939468 + -18.25 Combine like terms: 17.973939468 + -18.25 = -0.276060532 x = -0.276060532 Simplifying x = -0.276060532

Subproblem 2

x + 18.25 = -17.973939468 Simplifying x + 18.25 = -17.973939468 Reorder the terms: 18.25 + x = -17.973939468 Solving 18.25 + x = -17.973939468 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18.25' to each side of the equation. 18.25 + -18.25 + x = -17.973939468 + -18.25 Combine like terms: 18.25 + -18.25 = 0.00 0.00 + x = -17.973939468 + -18.25 x = -17.973939468 + -18.25 Combine like terms: -17.973939468 + -18.25 = -36.223939468 x = -36.223939468 Simplifying x = -36.223939468

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.276060532, -36.223939468}

See similar equations:

| 27x^3-300x=0 | | (2x-5)+(6x-11)= | | -3(x-5)=3x | | r^4+16r^2=0 | | t(4t+5)= | | 2x-3+5x-6=180 | | (3u^2-2u-7)(5u+4)= | | 8x-11y-3=0 | | (3x-5)(5x+3)=0 | | 106+87+58+x=360 | | 2.7y-3(4.9+3y)=5.1-6.3y | | (x+2)*2=16 | | 3x-2=8x+13 | | 7x^3y^2(-5x^2y^5)= | | 2*(7-4)^2-(8*2+2)/2 | | 9x-5+5x+3=180 | | 5x+2x=20-6 | | (x+8)(x+5)=0 | | 2(3x+2)=2x+16 | | W/9-2=-18 | | 2*(7-4)2-(8*2+2)/2 | | 5b-3+2b=b+3b | | 2x(x-1)=1+2x | | -4=x/7-8 | | a^2=361 | | 2(7-4)2-(82+2)/2 | | x+(x+1)+(x+3)=34 | | 5x+7=2x-8 | | 5y-4-3y=-16 | | 10x+7+6x-3=180 | | y-int=-2 | | 2x+5=7x-2 |

Equations solver categories