6x^2-30x-7=0

Simple and best practice solution for 6x^2-30x-7=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 6x^2-30x-7=0 equation:


Simplifying
6x2 + -30x + -7 = 0

Reorder the terms:
-7 + -30x + 6x2 = 0

Solving
-7 + -30x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-1.166666667 + -5x + x2 = 0

Move the constant term to the right:

Add '1.166666667' to each side of the equation.
-1.166666667 + -5x + 1.166666667 + x2 = 0 + 1.166666667

Reorder the terms:
-1.166666667 + 1.166666667 + -5x + x2 = 0 + 1.166666667

Combine like terms: -1.166666667 + 1.166666667 = 0.000000000
0.000000000 + -5x + x2 = 0 + 1.166666667
-5x + x2 = 0 + 1.166666667

Combine like terms: 0 + 1.166666667 = 1.166666667
-5x + x2 = 1.166666667

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 1.166666667 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 1.166666667 + 6.25

Combine like terms: 1.166666667 + 6.25 = 7.416666667
6.25 + -5x + x2 = 7.416666667

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 7.416666667

Calculate the square root of the right side: 2.723355773

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.723355773 and -2.723355773.

Subproblem 1

x + -2.5 = 2.723355773 Simplifying x + -2.5 = 2.723355773 Reorder the terms: -2.5 + x = 2.723355773 Solving -2.5 + x = 2.723355773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.723355773 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.723355773 + 2.5 x = 2.723355773 + 2.5 Combine like terms: 2.723355773 + 2.5 = 5.223355773 x = 5.223355773 Simplifying x = 5.223355773

Subproblem 2

x + -2.5 = -2.723355773 Simplifying x + -2.5 = -2.723355773 Reorder the terms: -2.5 + x = -2.723355773 Solving -2.5 + x = -2.723355773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.723355773 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.723355773 + 2.5 x = -2.723355773 + 2.5 Combine like terms: -2.723355773 + 2.5 = -0.223355773 x = -0.223355773 Simplifying x = -0.223355773

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.223355773, -0.223355773}

See similar equations:

| z-34=-5 | | y-1=63(x-33) | | 22/z=2 | | b-7=b+3 | | y-19=-10 | | 6x-10x=3 | | 13v=7v+54 | | 999999999999999999=1 | | 13v=7v | | 8/16=2w | | 9m^3+12m^2+4m=0 | | .7=1-x+.05 | | iz^3+(2i-1)z^2-(i+4)z+3(2i-1)=0 | | 26y=2 | | -112=11x+9 | | 2.75=14.25-.20x | | 2x+6y=56y | | 2y=44-6x | | 5=7-x/4 | | 6y+5-5y=9-6 | | 16/19=x/38 | | 12341234x+y=999999999999999999999999 | | 2-n+4=3n+3 | | 3x-7+4x+2= | | 3x+20=5x-19 | | 7n^2=8n-10 | | 11-5d=31 | | p(p+4)=21 | | 2/1=12 | | (3v+x)(3v-6x+7)= | | 4(3x+4)=14x+12-2x+4 | | 4/3x-3/10=7/8x |

Equations solver categories