x^2-3x-67=0

Simple and best practice solution for x^2-3x-67=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 x^2-3x-67=0 equation:


Simplifying
x2 + -3x + -67 = 0

Reorder the terms:
-67 + -3x + x2 = 0

Solving
-67 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '67' to each side of the equation.
-67 + -3x + 67 + x2 = 0 + 67

Reorder the terms:
-67 + 67 + -3x + x2 = 0 + 67

Combine like terms: -67 + 67 = 0
0 + -3x + x2 = 0 + 67
-3x + x2 = 0 + 67

Combine like terms: 0 + 67 = 67
-3x + x2 = 67

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 67 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 67 + 2.25

Combine like terms: 67 + 2.25 = 69.25
2.25 + -3x + x2 = 69.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 69.25

Calculate the square root of the right side: 8.321658489

Break this problem into two subproblems by setting 
(x + -1.5) equal to 8.321658489 and -8.321658489.

Subproblem 1

x + -1.5 = 8.321658489 Simplifying x + -1.5 = 8.321658489 Reorder the terms: -1.5 + x = 8.321658489 Solving -1.5 + x = 8.321658489 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 8.321658489 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 8.321658489 + 1.5 x = 8.321658489 + 1.5 Combine like terms: 8.321658489 + 1.5 = 9.821658489 x = 9.821658489 Simplifying x = 9.821658489

Subproblem 2

x + -1.5 = -8.321658489 Simplifying x + -1.5 = -8.321658489 Reorder the terms: -1.5 + x = -8.321658489 Solving -1.5 + x = -8.321658489 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -8.321658489 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -8.321658489 + 1.5 x = -8.321658489 + 1.5 Combine like terms: -8.321658489 + 1.5 = -6.821658489 x = -6.821658489 Simplifying x = -6.821658489

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.821658489, -6.821658489}

See similar equations:

| 2x+24=10x-62 | | 54-6x=3x+24 | | 6x+34=9x | | 169-4x=23x+16 | | -3.8s^2+0.9s-1.8-3(9s^2+6.3s-3)= | | 12-7x=30-14x | | 4p^2=20-10p | | 4b-5-7b-7= | | 6x+3(x+9)=9x+9(3x-3) | | -25-4x=4x+17 | | 0.9-0.18= | | 5-2a=7-4a+2a | | 38x-2= | | 2w^2+1w-66=0 | | 3a^2=12+9a | | n^2-16=6n | | x^2=-6x-8 | | 2v^2-32v=-128 | | 4r^2=20r+96 | | -26=6y-2 | | -166-10x=9x+17 | | 71-5x=22x+23 | | -4+5(10s-3)=55s+1 | | 3b^3-14b^2+16b=0 | | 15k^2+111k+42=0 | | 141-6x=39x+16 | | 4x+9=2x-9 | | 141-6x=39+16 | | 3x+30=5x+20 | | -x-2.44+0.8x=-4 | | 10x+20=12x+8 | | 124-9x=7x+20 |

Equations solver categories