2x^2-30x+27=0

Simple and best practice solution for 2x^2-30x+27=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^2-30x+27=0 equation:


Simplifying
2x2 + -30x + 27 = 0

Reorder the terms:
27 + -30x + 2x2 = 0

Solving
27 + -30x + 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'.
13.5 + -15x + x2 = 0

Move the constant term to the right:

Add '-13.5' to each side of the equation.
13.5 + -15x + -13.5 + x2 = 0 + -13.5

Reorder the terms:
13.5 + -13.5 + -15x + x2 = 0 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + -15x + x2 = 0 + -13.5
-15x + x2 = 0 + -13.5

Combine like terms: 0 + -13.5 = -13.5
-15x + x2 = -13.5

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -13.5 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -13.5 + 56.25

Combine like terms: -13.5 + 56.25 = 42.75
56.25 + -15x + x2 = 42.75

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 42.75

Calculate the square root of the right side: 6.538348415

Break this problem into two subproblems by setting 
(x + -7.5) equal to 6.538348415 and -6.538348415.

Subproblem 1

x + -7.5 = 6.538348415 Simplifying x + -7.5 = 6.538348415 Reorder the terms: -7.5 + x = 6.538348415 Solving -7.5 + x = 6.538348415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 6.538348415 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 6.538348415 + 7.5 x = 6.538348415 + 7.5 Combine like terms: 6.538348415 + 7.5 = 14.038348415 x = 14.038348415 Simplifying x = 14.038348415

Subproblem 2

x + -7.5 = -6.538348415 Simplifying x + -7.5 = -6.538348415 Reorder the terms: -7.5 + x = -6.538348415 Solving -7.5 + x = -6.538348415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -6.538348415 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -6.538348415 + 7.5 x = -6.538348415 + 7.5 Combine like terms: -6.538348415 + 7.5 = 0.961651585 x = 0.961651585 Simplifying x = 0.961651585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.038348415, 0.961651585}

See similar equations:

| 5X+7=56-2X | | 12-x=-13 | | -2(x+2)+3x=14 | | 13-8x=52-15x | | -2x(x+2)+3x=14 | | 5x-31=7x+7 | | 232-3x=33x+24 | | 7x+3x=9x+7 | | s^2+6sg-27g^2= | | 132-3x=33x+24 | | 7x+x-6=7x+4 | | 6-4x=7x-9x+8-2 | | 110-5x=2x+12 | | 5x+4=6x | | 6t-t-7=4t-7 | | 8x+4=3x+12 | | 7(w+9)=6w-1 | | 8x^2+10x-3=0 | | 4(y+4)=3y | | 3x+4-x=10+x+9 | | x^2+16x+60=0 | | 8x^2+10x+35=0 | | 8z-6=9z-2 | | 8y+7=8y-y | | 5x-1=14x-55 | | 20x+15=25 | | 3x+33=13x-87 | | 6x-2=2x+10 | | 9x-8=91 | | 6y-2=2y+10 | | x^2+14x+13=0 | | 10x^2+1x-3=0 |

Equations solver categories