6x^2=8-7x

Simple and best practice solution for 6x^2=8-7x 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=8-7x equation:


Simplifying
6x2 = 8 + -7x

Solving
6x2 = 8 + -7x

Solving for variable 'x'.

Reorder the terms:
-8 + 7x + 6x2 = 8 + -7x + -8 + 7x

Reorder the terms:
-8 + 7x + 6x2 = 8 + -8 + -7x + 7x

Combine like terms: 8 + -8 = 0
-8 + 7x + 6x2 = 0 + -7x + 7x
-8 + 7x + 6x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-8 + 7x + 6x2 = 0

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

Divide each side by '6'.
-1.333333333 + 1.166666667x + x2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + 1.166666667x + 1.333333333 + x2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + 1.166666667x + x2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + 1.166666667x + x2 = 0 + 1.333333333
1.166666667x + x2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
1.166666667x + x2 = 1.333333333

The x term is 1.166666667x.  Take half its coefficient (0.5833333335).
Square it (0.3402777780) and add it to both sides.

Add '0.3402777780' to each side of the equation.
1.166666667x + 0.3402777780 + x2 = 1.333333333 + 0.3402777780

Reorder the terms:
0.3402777780 + 1.166666667x + x2 = 1.333333333 + 0.3402777780

Combine like terms: 1.333333333 + 0.3402777780 = 1.673611111
0.3402777780 + 1.166666667x + x2 = 1.673611111

Factor a perfect square on the left side:
(x + 0.5833333335)(x + 0.5833333335) = 1.673611111

Calculate the square root of the right side: 1.293681225

Break this problem into two subproblems by setting 
(x + 0.5833333335) equal to 1.293681225 and -1.293681225.

Subproblem 1

x + 0.5833333335 = 1.293681225 Simplifying x + 0.5833333335 = 1.293681225 Reorder the terms: 0.5833333335 + x = 1.293681225 Solving 0.5833333335 + x = 1.293681225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5833333335' to each side of the equation. 0.5833333335 + -0.5833333335 + x = 1.293681225 + -0.5833333335 Combine like terms: 0.5833333335 + -0.5833333335 = 0.0000000000 0.0000000000 + x = 1.293681225 + -0.5833333335 x = 1.293681225 + -0.5833333335 Combine like terms: 1.293681225 + -0.5833333335 = 0.7103478915 x = 0.7103478915 Simplifying x = 0.7103478915

Subproblem 2

x + 0.5833333335 = -1.293681225 Simplifying x + 0.5833333335 = -1.293681225 Reorder the terms: 0.5833333335 + x = -1.293681225 Solving 0.5833333335 + x = -1.293681225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5833333335' to each side of the equation. 0.5833333335 + -0.5833333335 + x = -1.293681225 + -0.5833333335 Combine like terms: 0.5833333335 + -0.5833333335 = 0.0000000000 0.0000000000 + x = -1.293681225 + -0.5833333335 x = -1.293681225 + -0.5833333335 Combine like terms: -1.293681225 + -0.5833333335 = -1.8770145585 x = -1.8770145585 Simplifying x = -1.8770145585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7103478915, -1.8770145585}

See similar equations:

| 2(3m-4)=7m | | 2u^2-7u+2=0 | | -3n/6 | | 1/40 | | 60=5x*5 | | 0=-2t^2+t-3 | | (8x+24)8=(10x-30)10 | | 2n(n-5)=30 | | 10+x-3*10=8+x+3*8 | | 32/5 | | 7x=2x+75 | | (x+3)64=(x-3)100 | | p-3=30-11 | | (x+3)+8*8=(x-3)+10*10 | | =x^3-4x^2+4x | | 4d+c=d-15 | | x=20+1.33x | | 3-(x+4)=3x-9 | | 7a-4+2a=3a+2 | | 26x-14=-18x+5 | | 15(x)=10(x+1) | | 5(3x-1/5-7)=70 | | 6(1g+3)=-2(1g+31) | | cotx=tanx | | 2(x-3)=2x-2 | | y=9-(100/(100-x)*9) | | 40x^2-16x-4= | | sinx-sqrt(2)=-sinx | | x^2-1.5x=0 | | 9-(((100-x)/100)*9) | | -2(4y-3)+2y=3(y+6) | | -6-3=0 |

Equations solver categories