4x^2+8x-59=0

Simple and best practice solution for 4x^2+8x-59=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+8x-59=0 equation:


Simplifying
4x2 + 8x + -59 = 0

Reorder the terms:
-59 + 8x + 4x2 = 0

Solving
-59 + 8x + 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'.
-14.75 + 2x + x2 = 0

Move the constant term to the right:

Add '14.75' to each side of the equation.
-14.75 + 2x + 14.75 + x2 = 0 + 14.75

Reorder the terms:
-14.75 + 14.75 + 2x + x2 = 0 + 14.75

Combine like terms: -14.75 + 14.75 = 0.00
0.00 + 2x + x2 = 0 + 14.75
2x + x2 = 0 + 14.75

Combine like terms: 0 + 14.75 = 14.75
2x + x2 = 14.75

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 14.75 + 1

Reorder the terms:
1 + 2x + x2 = 14.75 + 1

Combine like terms: 14.75 + 1 = 15.75
1 + 2x + x2 = 15.75

Factor a perfect square on the left side:
(x + 1)(x + 1) = 15.75

Calculate the square root of the right side: 3.968626967

Break this problem into two subproblems by setting 
(x + 1) equal to 3.968626967 and -3.968626967.

Subproblem 1

x + 1 = 3.968626967 Simplifying x + 1 = 3.968626967 Reorder the terms: 1 + x = 3.968626967 Solving 1 + x = 3.968626967 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.968626967 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.968626967 + -1 x = 3.968626967 + -1 Combine like terms: 3.968626967 + -1 = 2.968626967 x = 2.968626967 Simplifying x = 2.968626967

Subproblem 2

x + 1 = -3.968626967 Simplifying x + 1 = -3.968626967 Reorder the terms: 1 + x = -3.968626967 Solving 1 + x = -3.968626967 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.968626967 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.968626967 + -1 x = -3.968626967 + -1 Combine like terms: -3.968626967 + -1 = -4.968626967 x = -4.968626967 Simplifying x = -4.968626967

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.968626967, -4.968626967}

See similar equations:

| 15d+17+13d= | | B-8.3=-18.1 | | 50=x-10/3 | | 7m^2-60m+32=0 | | D/8=-20.4 | | 4+f/3-9= | | 55/6y | | 10y-14+11-13y= | | -6.9y=69 | | -z^3-7z^2-12z= | | X-18.7=22 | | f=8*cos(x)sin(y) | | -40-9y+19=-26y | | 10n^2+27n+18=0 | | 3a^3-12a^2-63a= | | (7+k)*k=16 | | -9.3y=-111.6 | | 7n=20/n | | 4a^4+2a= | | X-23=16.5 | | 3lnx+2=6-lne | | 2(x-3)-10=18x-192 | | 6x^2+6x-120= | | 10-4(x-5)= | | 190+.25x=400 | | X/6-(8/2*4)=-4 | | 1x^2-16x+6=0 | | 13-11-18m= | | 736+(24+s)=(736+24)+9 | | -c+4+3c=-2c+4 | | 2x^2-28x+98= | | m-20=m+16 |

Equations solver categories