4x^2+13x-25=0

Simple and best practice solution for 4x^2+13x-25=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+13x-25=0 equation:


Simplifying
4x2 + 13x + -25 = 0

Reorder the terms:
-25 + 13x + 4x2 = 0

Solving
-25 + 13x + 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'.
-6.25 + 3.25x + x2 = 0

Move the constant term to the right:

Add '6.25' to each side of the equation.
-6.25 + 3.25x + 6.25 + x2 = 0 + 6.25

Reorder the terms:
-6.25 + 6.25 + 3.25x + x2 = 0 + 6.25

Combine like terms: -6.25 + 6.25 = 0.00
0.00 + 3.25x + x2 = 0 + 6.25
3.25x + x2 = 0 + 6.25

Combine like terms: 0 + 6.25 = 6.25
3.25x + x2 = 6.25

The x term is 3.25x.  Take half its coefficient (1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
3.25x + 2.640625 + x2 = 6.25 + 2.640625

Reorder the terms:
2.640625 + 3.25x + x2 = 6.25 + 2.640625

Combine like terms: 6.25 + 2.640625 = 8.890625
2.640625 + 3.25x + x2 = 8.890625

Factor a perfect square on the left side:
(x + 1.625)(x + 1.625) = 8.890625

Calculate the square root of the right side: 2.98171511

Break this problem into two subproblems by setting 
(x + 1.625) equal to 2.98171511 and -2.98171511.

Subproblem 1

x + 1.625 = 2.98171511 Simplifying x + 1.625 = 2.98171511 Reorder the terms: 1.625 + x = 2.98171511 Solving 1.625 + x = 2.98171511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + x = 2.98171511 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + x = 2.98171511 + -1.625 x = 2.98171511 + -1.625 Combine like terms: 2.98171511 + -1.625 = 1.35671511 x = 1.35671511 Simplifying x = 1.35671511

Subproblem 2

x + 1.625 = -2.98171511 Simplifying x + 1.625 = -2.98171511 Reorder the terms: 1.625 + x = -2.98171511 Solving 1.625 + x = -2.98171511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + x = -2.98171511 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + x = -2.98171511 + -1.625 x = -2.98171511 + -1.625 Combine like terms: -2.98171511 + -1.625 = -4.60671511 x = -4.60671511 Simplifying x = -4.60671511

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.35671511, -4.60671511}

See similar equations:

| 2x-4=7+x | | 3x-6/24 | | x+3y=50 | | 3x-10=-2 | | 8x=7x+6 | | -5m=-15/8 | | 26x+38x=22x+50 | | -7/8z=-4/3 | | X=3(1+0.7) | | -8=2/7x | | 5a^2+20+20=0 | | 162/200 | | 5+20+20=0 | | -2*2f*3g= | | A=2500(1.06)t | | 6/u=-4 | | 24g/8= | | 4e/2e= | | 3(x-5)+4=2(2-x) | | 4*3e= | | 4xy=672 | | x-13/5=14/15 | | (0+50)*1-(60-60)*(0+10)= | | 8(2x+5)= | | 5x*2+1=9 | | 3/7y-1/3=-1/2 | | x^3-2x^2-2.7x+0.9=0 | | 3x-7y+4x=28 | | 12x^3-10x=0 | | (x-y)2=169 | | (x-y)squared=169 | | 2z-1=14-z |

Equations solver categories