2x^2-12x-75=0

Simple and best practice solution for 2x^2-12x-75=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^2-12x-75=0 equation:


Simplifying
2x2 + -12x + -75 = 0

Reorder the terms:
-75 + -12x + 2x2 = 0

Solving
-75 + -12x + 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'.
-37.5 + -6x + x2 = 0

Move the constant term to the right:

Add '37.5' to each side of the equation.
-37.5 + -6x + 37.5 + x2 = 0 + 37.5

Reorder the terms:
-37.5 + 37.5 + -6x + x2 = 0 + 37.5

Combine like terms: -37.5 + 37.5 = 0.0
0.0 + -6x + x2 = 0 + 37.5
-6x + x2 = 0 + 37.5

Combine like terms: 0 + 37.5 = 37.5
-6x + x2 = 37.5

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 37.5 + 9

Reorder the terms:
9 + -6x + x2 = 37.5 + 9

Combine like terms: 37.5 + 9 = 46.5
9 + -6x + x2 = 46.5

Factor a perfect square on the left side:
(x + -3)(x + -3) = 46.5

Calculate the square root of the right side: 6.819090848

Break this problem into two subproblems by setting 
(x + -3) equal to 6.819090848 and -6.819090848.

Subproblem 1

x + -3 = 6.819090848 Simplifying x + -3 = 6.819090848 Reorder the terms: -3 + x = 6.819090848 Solving -3 + x = 6.819090848 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 6.819090848 + 3 Combine like terms: -3 + 3 = 0 0 + x = 6.819090848 + 3 x = 6.819090848 + 3 Combine like terms: 6.819090848 + 3 = 9.819090848 x = 9.819090848 Simplifying x = 9.819090848

Subproblem 2

x + -3 = -6.819090848 Simplifying x + -3 = -6.819090848 Reorder the terms: -3 + x = -6.819090848 Solving -3 + x = -6.819090848 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -6.819090848 + 3 Combine like terms: -3 + 3 = 0 0 + x = -6.819090848 + 3 x = -6.819090848 + 3 Combine like terms: -6.819090848 + 3 = -3.819090848 x = -3.819090848 Simplifying x = -3.819090848

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.819090848, -3.819090848}

See similar equations:

| 2(-2)+1=-3 | | 10x-2=x | | 12X+12y=5xy | | s=11 | | 6(3x+4)=-8 | | 2y=y-30 | | xsquared-8x+35=0 | | -3*a*ln(x)+ln(y)=ln(3) | | 3[x-5]-7=14 | | 4(x+7)=3x-3 | | 5=2(x+8) | | 2(12x-12)=-4 | | Y+4=-2(x-4) | | Tan^2x-7tanx+12=0 | | -4(z+9)=4-3z | | 14x-9y=44 | | 17x+4+5=180 | | 15=7(3x-3) | | 6z+1=6z-z | | -24p-5(5-6p)=3(p-6)-4 | | 3.9-36.24= | | 2x-6=4y+6 | | -7(x+3)=15 | | 180=3x+12+4x-8+x | | 105+5x+11=180 | | Y+2x+z=135 | | 3x+14-6x=18-18x+15x-4 | | 48+12x=12x+48 | | 9x+5=49 | | 6x-4=15x-63 | | -13+x=x+28 | | 6n^2-2n=-6 |

Equations solver categories