78x^2+5x-58=0

Simple and best practice solution for 78x^2+5x-58=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 78x^2+5x-58=0 equation:


Simplifying
78x2 + 5x + -58 = 0

Reorder the terms:
-58 + 5x + 78x2 = 0

Solving
-58 + 5x + 78x2 = 0

Solving for variable 'x'.

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

Divide each side by '78'.
-0.7435897436 + 0.0641025641x + x2 = 0

Move the constant term to the right:

Add '0.7435897436' to each side of the equation.
-0.7435897436 + 0.0641025641x + 0.7435897436 + x2 = 0 + 0.7435897436

Reorder the terms:
-0.7435897436 + 0.7435897436 + 0.0641025641x + x2 = 0 + 0.7435897436

Combine like terms: -0.7435897436 + 0.7435897436 = 0.0000000000
0.0000000000 + 0.0641025641x + x2 = 0 + 0.7435897436
0.0641025641x + x2 = 0 + 0.7435897436

Combine like terms: 0 + 0.7435897436 = 0.7435897436
0.0641025641x + x2 = 0.7435897436

The x term is 0.0641025641x.  Take half its coefficient (0.03205128205).
Square it (0.001027284681) and add it to both sides.

Add '0.001027284681' to each side of the equation.
0.0641025641x + 0.001027284681 + x2 = 0.7435897436 + 0.001027284681

Reorder the terms:
0.001027284681 + 0.0641025641x + x2 = 0.7435897436 + 0.001027284681

Combine like terms: 0.7435897436 + 0.001027284681 = 0.744617028281
0.001027284681 + 0.0641025641x + x2 = 0.744617028281

Factor a perfect square on the left side:
(x + 0.03205128205)(x + 0.03205128205) = 0.744617028281

Calculate the square root of the right side: 0.862911947

Break this problem into two subproblems by setting 
(x + 0.03205128205) equal to 0.862911947 and -0.862911947.

Subproblem 1

x + 0.03205128205 = 0.862911947 Simplifying x + 0.03205128205 = 0.862911947 Reorder the terms: 0.03205128205 + x = 0.862911947 Solving 0.03205128205 + x = 0.862911947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03205128205' to each side of the equation. 0.03205128205 + -0.03205128205 + x = 0.862911947 + -0.03205128205 Combine like terms: 0.03205128205 + -0.03205128205 = 0.00000000000 0.00000000000 + x = 0.862911947 + -0.03205128205 x = 0.862911947 + -0.03205128205 Combine like terms: 0.862911947 + -0.03205128205 = 0.83086066495 x = 0.83086066495 Simplifying x = 0.83086066495

Subproblem 2

x + 0.03205128205 = -0.862911947 Simplifying x + 0.03205128205 = -0.862911947 Reorder the terms: 0.03205128205 + x = -0.862911947 Solving 0.03205128205 + x = -0.862911947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03205128205' to each side of the equation. 0.03205128205 + -0.03205128205 + x = -0.862911947 + -0.03205128205 Combine like terms: 0.03205128205 + -0.03205128205 = 0.00000000000 0.00000000000 + x = -0.862911947 + -0.03205128205 x = -0.862911947 + -0.03205128205 Combine like terms: -0.862911947 + -0.03205128205 = -0.89496322905 x = -0.89496322905 Simplifying x = -0.89496322905

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.83086066495, -0.89496322905}

See similar equations:

| -8x+-4+6x=5x+11+-4x | | 3a-15=4a+5 | | -8-4+6x=5x+11-4x | | 7b-43+27=25 | | 8r-11-18q+5p+7q= | | X+183=180 | | 3/4k-2=k | | 1.3+0.1x=0.6x-10.2 | | 6x^2+9y^2-24x-54y+105=0 | | -7t+2+8r+9r-8t= | | -2-5n=48 | | f(3x+2)=5x-6 | | 1/15x-1/2=1/5x-3/10 | | 0.15p-1.5=4.5 | | 10w+19+3x=6(9+w)-14 | | 3.50*x+812= | | 11x+-5=27 | | 4x-6(5x+1)+8(x-3)=14-10(x+2) | | z=15x+18y | | -(3x-4)=x+16 | | 4x+1=8x-1 | | (3x-4)=x+16 | | -2x+7=4x-3(2x+7) | | y=16t^2+63t+5 | | v+(-8)=12 | | y=16t+63t+5 | | 28+x=19+x | | 2(5-1d)=2-4d | | 11-(16+6p)=49 | | -8m+9=m+2-10m | | -5b+2(5b+11)=27 | | 10+6a-15+6a= |

Equations solver categories