8x^2=5-5x

Simple and best practice solution for 8x^2=5-5x 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 8x^2=5-5x equation:


Simplifying
8x2 = 5 + -5x

Solving
8x2 = 5 + -5x

Solving for variable 'x'.

Reorder the terms:
-5 + 5x + 8x2 = 5 + -5x + -5 + 5x

Reorder the terms:
-5 + 5x + 8x2 = 5 + -5 + -5x + 5x

Combine like terms: 5 + -5 = 0
-5 + 5x + 8x2 = 0 + -5x + 5x
-5 + 5x + 8x2 = -5x + 5x

Combine like terms: -5x + 5x = 0
-5 + 5x + 8x2 = 0

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

Divide each side by '8'.
-0.625 + 0.625x + x2 = 0

Move the constant term to the right:

Add '0.625' to each side of the equation.
-0.625 + 0.625x + 0.625 + x2 = 0 + 0.625

Reorder the terms:
-0.625 + 0.625 + 0.625x + x2 = 0 + 0.625

Combine like terms: -0.625 + 0.625 = 0.000
0.000 + 0.625x + x2 = 0 + 0.625
0.625x + x2 = 0 + 0.625

Combine like terms: 0 + 0.625 = 0.625
0.625x + x2 = 0.625

The x term is 0.625x.  Take half its coefficient (0.3125).
Square it (0.09765625) and add it to both sides.

Add '0.09765625' to each side of the equation.
0.625x + 0.09765625 + x2 = 0.625 + 0.09765625

Reorder the terms:
0.09765625 + 0.625x + x2 = 0.625 + 0.09765625

Combine like terms: 0.625 + 0.09765625 = 0.72265625
0.09765625 + 0.625x + x2 = 0.72265625

Factor a perfect square on the left side:
(x + 0.3125)(x + 0.3125) = 0.72265625

Calculate the square root of the right side: 0.850091907

Break this problem into two subproblems by setting 
(x + 0.3125) equal to 0.850091907 and -0.850091907.

Subproblem 1

x + 0.3125 = 0.850091907 Simplifying x + 0.3125 = 0.850091907 Reorder the terms: 0.3125 + x = 0.850091907 Solving 0.3125 + x = 0.850091907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3125' to each side of the equation. 0.3125 + -0.3125 + x = 0.850091907 + -0.3125 Combine like terms: 0.3125 + -0.3125 = 0.0000 0.0000 + x = 0.850091907 + -0.3125 x = 0.850091907 + -0.3125 Combine like terms: 0.850091907 + -0.3125 = 0.537591907 x = 0.537591907 Simplifying x = 0.537591907

Subproblem 2

x + 0.3125 = -0.850091907 Simplifying x + 0.3125 = -0.850091907 Reorder the terms: 0.3125 + x = -0.850091907 Solving 0.3125 + x = -0.850091907 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3125' to each side of the equation. 0.3125 + -0.3125 + x = -0.850091907 + -0.3125 Combine like terms: 0.3125 + -0.3125 = 0.0000 0.0000 + x = -0.850091907 + -0.3125 x = -0.850091907 + -0.3125 Combine like terms: -0.850091907 + -0.3125 = -1.162591907 x = -1.162591907 Simplifying x = -1.162591907

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.537591907, -1.162591907}

See similar equations:

| 9y+18=27c | | -22=2-b | | x+2+5x+2=19+6x+5 | | -5x-2y=5 | | -5k(k^(8/5)-3k^(3/5)) | | 11x-(5x+6)+14=4x | | 30x+6=18 | | 10-3(x+2)+6=12 | | 2x+9-5(x+1)=4x+9 | | 72000000=7.2*10n | | 3x+ry=2yx-px | | 5x^3+40y^3=0 | | 72000000=7.2*10 | | 4(x+1)=5+4x | | 5+7(2k+4)= | | 10-3(2x+2)+6=12 | | X-(-8)=36 | | x/7-1=4 | | 5n+20+3n+40=180 | | -6-(-34)= | | 12-5x-2x^2= | | 3/4/1/8= | | 11.30-7.20f=-3.82 | | 115=10(x+60)+65 | | 30x^6+33x^5+9x^4=0 | | X-8=72-4x | | =x^4-8 | | -5-4x=3x+24 | | 2x-16=-6x-8 | | -6-(6-12x)=4x-2(x+11) | | -3(p+4)-2(1-8p)=3(4+2p) | | x+(x+2)=90 |

Equations solver categories