4x^2-15x+5=0

Simple and best practice solution for 4x^2-15x+5=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^2-15x+5=0 equation:


Simplifying
4x2 + -15x + 5 = 0

Reorder the terms:
5 + -15x + 4x2 = 0

Solving
5 + -15x + 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'.
1.25 + -3.75x + x2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -3.75x + -1.25 + x2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -3.75x + x2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -3.75x + x2 = 0 + -1.25
-3.75x + x2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-3.75x + x2 = -1.25

The x term is -3.75x.  Take half its coefficient (-1.875).
Square it (3.515625) and add it to both sides.

Add '3.515625' to each side of the equation.
-3.75x + 3.515625 + x2 = -1.25 + 3.515625

Reorder the terms:
3.515625 + -3.75x + x2 = -1.25 + 3.515625

Combine like terms: -1.25 + 3.515625 = 2.265625
3.515625 + -3.75x + x2 = 2.265625

Factor a perfect square on the left side:
(x + -1.875)(x + -1.875) = 2.265625

Calculate the square root of the right side: 1.505199322

Break this problem into two subproblems by setting 
(x + -1.875) equal to 1.505199322 and -1.505199322.

Subproblem 1

x + -1.875 = 1.505199322 Simplifying x + -1.875 = 1.505199322 Reorder the terms: -1.875 + x = 1.505199322 Solving -1.875 + x = 1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = 1.505199322 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = 1.505199322 + 1.875 x = 1.505199322 + 1.875 Combine like terms: 1.505199322 + 1.875 = 3.380199322 x = 3.380199322 Simplifying x = 3.380199322

Subproblem 2

x + -1.875 = -1.505199322 Simplifying x + -1.875 = -1.505199322 Reorder the terms: -1.875 + x = -1.505199322 Solving -1.875 + x = -1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = -1.505199322 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = -1.505199322 + 1.875 x = -1.505199322 + 1.875 Combine like terms: -1.505199322 + 1.875 = 0.369800678 x = 0.369800678 Simplifying x = 0.369800678

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.380199322, 0.369800678}

See similar equations:

| 5x+14=-3x+2 | | -4x+0=14 | | x-1=5+6 | | 6-x=2*3 | | 6-x=2.3 | | (a/b)2 | | 5x-3(2x-4)=3(4x-1)+5/2 | | -4x-1=-2x+7 | | x+10-5=20-5+6x | | x+10-5=20-5 | | 2x^2-28x-2+c=-50 | | 11x-121=5x-7 | | 7p^2+10p+3=0 | | 182-5x=31x+22 | | t(2y+4p)+(n+3h)=24 | | 9+4+7=29 | | m^4-2m^3+2m-1=0 | | t^3-500t-3750=0 | | 2(x+16)+4(67x-6)=0 | | 57-6x=21x+15 | | -y=-3x+(-14) | | 2x-3=5-2 | | 1y=1x-1 | | 2(2x-5)=11 | | 35x=-35 | | 4+3x-2=7x+8-3 | | 25x^2+5*x-12= | | 25x^2+5*x-12=0 | | 6x^2+4x+5=0 | | 1y=1x+16 | | 3*10-5*10-1=19 | | 7(2x+2y)=-14(-35) |

Equations solver categories