0=5x^2-5x-4

Simple and best practice solution for 0=5x^2-5x-4 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 0=5x^2-5x-4 equation:


Simplifying
0 = 5x2 + -5x + -4

Reorder the terms:
0 = -4 + -5x + 5x2

Solving
0 = -4 + -5x + 5x2

Solving for variable 'x'.

Combine like terms: 0 + 4 = 4
4 + 5x + -5x2 = -4 + -5x + 5x2 + 4 + 5x + -5x2

Reorder the terms:
4 + 5x + -5x2 = -4 + 4 + -5x + 5x + 5x2 + -5x2

Combine like terms: -4 + 4 = 0
4 + 5x + -5x2 = 0 + -5x + 5x + 5x2 + -5x2
4 + 5x + -5x2 = -5x + 5x + 5x2 + -5x2

Combine like terms: -5x + 5x = 0
4 + 5x + -5x2 = 0 + 5x2 + -5x2
4 + 5x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
4 + 5x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-0.8 + -1x + x2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + -1x + 0.8 + x2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + -1x + x2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + -1x + x2 = 0 + 0.8
-1x + x2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
-1x + x2 = 0.8

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 0.8 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 0.8 + 0.25

Combine like terms: 0.8 + 0.25 = 1.05
0.25 + -1x + x2 = 1.05

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1.05

Calculate the square root of the right side: 1.024695077

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.024695077 and -1.024695077.

Subproblem 1

x + -0.5 = 1.024695077 Simplifying x + -0.5 = 1.024695077 Reorder the terms: -0.5 + x = 1.024695077 Solving -0.5 + x = 1.024695077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.024695077 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.024695077 + 0.5 x = 1.024695077 + 0.5 Combine like terms: 1.024695077 + 0.5 = 1.524695077 x = 1.524695077 Simplifying x = 1.524695077

Subproblem 2

x + -0.5 = -1.024695077 Simplifying x + -0.5 = -1.024695077 Reorder the terms: -0.5 + x = -1.024695077 Solving -0.5 + x = -1.024695077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.024695077 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.024695077 + 0.5 x = -1.024695077 + 0.5 Combine like terms: -1.024695077 + 0.5 = -0.524695077 x = -0.524695077 Simplifying x = -0.524695077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.524695077, -0.524695077}

See similar equations:

| 8=0.51a+0.58y | | In(2x-3)-in(x+1)=2inx | | 0=5x^2-5x-8 | | F(-5)=x^2-12x+35 | | X-4=5X+16 | | -3X-10=X+10 | | 0.78p=1.2-2.52 | | 5a+4a-7b-2b= | | -5(X-1)+3(3X-5)= | | (15-x)(x+5)=96 | | solvex^2-5x+4=0 | | 8x+3y-2(3y-5x)= | | 4x*3y=2700 | | k^2+4k+5=0 | | 14-9+7+2x=-x+2 | | 1x+4x+7x-13=4+x-7 | | ydx+ctgxdy=0 | | 294=4.9t^2+34.3t | | ydx+(1+x^2)dy=0 | | y=x^2-2-35 | | 8x+6y-3x+y+2x= | | 3x+4y+2z=11 | | 3x-4y-2z=-3 | | 20l^3+19l^2-29=0 | | 3x+4y-2z=11 | | 6x-7a=5x | | 5x+12=9x | | 24.54= | | 12y+4-3=9 | | -2(x+3)(x+3)= | | X^2+3x+180=0 | | 8(p+2)=1+3 |

Equations solver categories