4x^2-32x-31=0

Simple and best practice solution for 4x^2-32x-31=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 4x^2-32x-31=0 equation:


Simplifying
4x2 + -32x + -31 = 0

Reorder the terms:
-31 + -32x + 4x2 = 0

Solving
-31 + -32x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-7.75 + -8x + x2 = 0

Move the constant term to the right:

Add '7.75' to each side of the equation.
-7.75 + -8x + 7.75 + x2 = 0 + 7.75

Reorder the terms:
-7.75 + 7.75 + -8x + x2 = 0 + 7.75

Combine like terms: -7.75 + 7.75 = 0.00
0.00 + -8x + x2 = 0 + 7.75
-8x + x2 = 0 + 7.75

Combine like terms: 0 + 7.75 = 7.75
-8x + x2 = 7.75

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 7.75 + 16

Reorder the terms:
16 + -8x + x2 = 7.75 + 16

Combine like terms: 7.75 + 16 = 23.75
16 + -8x + x2 = 23.75

Factor a perfect square on the left side:
(x + -4)(x + -4) = 23.75

Calculate the square root of the right side: 4.873397172

Break this problem into two subproblems by setting 
(x + -4) equal to 4.873397172 and -4.873397172.

Subproblem 1

x + -4 = 4.873397172 Simplifying x + -4 = 4.873397172 Reorder the terms: -4 + x = 4.873397172 Solving -4 + x = 4.873397172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 4.873397172 + 4 Combine like terms: -4 + 4 = 0 0 + x = 4.873397172 + 4 x = 4.873397172 + 4 Combine like terms: 4.873397172 + 4 = 8.873397172 x = 8.873397172 Simplifying x = 8.873397172

Subproblem 2

x + -4 = -4.873397172 Simplifying x + -4 = -4.873397172 Reorder the terms: -4 + x = -4.873397172 Solving -4 + x = -4.873397172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -4.873397172 + 4 Combine like terms: -4 + 4 = 0 0 + x = -4.873397172 + 4 x = -4.873397172 + 4 Combine like terms: -4.873397172 + 4 = -0.873397172 x = -0.873397172 Simplifying x = -0.873397172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.873397172, -0.873397172}

See similar equations:

| 6.30=8.366-0.33x | | x^3-7x^6=0 | | p=x-120/5 | | 5(x+3)=100 | | 5x+3x-10=25 | | Kx^2+kx+6=0 | | 3-y-5+7=0 | | 4x^2+60x-136=0 | | 7t^2-13t-2=0 | | -2(3x-1)=4(2+1) | | 2.4n/.8 | | 2(3*7.5-5)=2*7.5+20 | | 9x^2-4y^2+8y+32=0 | | 5+6y-23=(2y+8)-10 | | 9x^3+15x= | | x-48=-18 | | 8q^2-4q^2=9q+24 | | .0333+.16666= | | 8x-(6x+9)= | | (5x-4)(6x+6)=0 | | .25+-.25= | | 4x^2-27x+28=-8+7 | | -8n(2n-1)=0 | | 7a+7=3a-13 | | 27651487+2435963248523= | | x^3-3x^2+21=0 | | (2x^3)(7x^6)= | | 3u-5(y-1)=4 | | g+10=3y+2 | | g+10=y+2 | | 35.74+.10=80 | | (Z^4*y^(5/3))^(-1/5) |

Equations solver categories