2x^2-3x-180=0

Simple and best practice solution for 2x^2-3x-180=0 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^2-3x-180=0 equation:


Simplifying
2x2 + -3x + -180 = 0

Reorder the terms:
-180 + -3x + 2x2 = 0

Solving
-180 + -3x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-90 + -1.5x + x2 = 0

Move the constant term to the right:

Add '90' to each side of the equation.
-90 + -1.5x + 90 + x2 = 0 + 90

Reorder the terms:
-90 + 90 + -1.5x + x2 = 0 + 90

Combine like terms: -90 + 90 = 0
0 + -1.5x + x2 = 0 + 90
-1.5x + x2 = 0 + 90

Combine like terms: 0 + 90 = 90
-1.5x + x2 = 90

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 90 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 90 + 0.5625

Combine like terms: 90 + 0.5625 = 90.5625
0.5625 + -1.5x + x2 = 90.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 90.5625

Calculate the square root of the right side: 9.516433155

Break this problem into two subproblems by setting 
(x + -0.75) equal to 9.516433155 and -9.516433155.

Subproblem 1

x + -0.75 = 9.516433155 Simplifying x + -0.75 = 9.516433155 Reorder the terms: -0.75 + x = 9.516433155 Solving -0.75 + x = 9.516433155 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 9.516433155 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 9.516433155 + 0.75 x = 9.516433155 + 0.75 Combine like terms: 9.516433155 + 0.75 = 10.266433155 x = 10.266433155 Simplifying x = 10.266433155

Subproblem 2

x + -0.75 = -9.516433155 Simplifying x + -0.75 = -9.516433155 Reorder the terms: -0.75 + x = -9.516433155 Solving -0.75 + x = -9.516433155 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -9.516433155 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -9.516433155 + 0.75 x = -9.516433155 + 0.75 Combine like terms: -9.516433155 + 0.75 = -8.766433155 x = -8.766433155 Simplifying x = -8.766433155

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.266433155, -8.766433155}

See similar equations:

| -7/4a=35 | | -18+14=m-3 | | 3a-2b+4a-9b= | | 9-7x-5-3x=6 | | 6+k+k=32 | | x-6=-5+3 | | -3(2x-6)-18=-3(7x+3)-5 | | 90=0.5x(x-3) | | 1=0.1x-0.8-27 | | 10b+19=14b-5 | | -18x=12x^2+6 | | .5x^2-1.5x-90=0 | | 2x^2=8x-8 | | 0.2x-0.6x-11=1 | | n/4-13=1 | | 3n-5(3+8n)=-15+7n | | x=17-4x+8 | | 7/4x=63 | | 0.18(24)+0.03x=0.06(18+x) | | x^2/x^2+13*x+14/x | | 14y=42 | | 2x^2+21x-100=0 | | 2(6-4)=8b-11 | | 4x+5x=9x | | 16=-2x | | 5x+6=14-3 | | 2q/3+5/9-q/6=5q/6-2/18 | | 500-200= | | 6(5x-2)+1=30x | | 2v^2+9v=-4 | | 12=5x^2+17x | | 90-a+180-a=260 |

Equations solver categories