x^2+118x-378=0

Simple and best practice solution for x^2+118x-378=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 x^2+118x-378=0 equation:


Simplifying
x2 + 118x + -378 = 0

Reorder the terms:
-378 + 118x + x2 = 0

Solving
-378 + 118x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '378' to each side of the equation.
-378 + 118x + 378 + x2 = 0 + 378

Reorder the terms:
-378 + 378 + 118x + x2 = 0 + 378

Combine like terms: -378 + 378 = 0
0 + 118x + x2 = 0 + 378
118x + x2 = 0 + 378

Combine like terms: 0 + 378 = 378
118x + x2 = 378

The x term is 118x.  Take half its coefficient (59).
Square it (3481) and add it to both sides.

Add '3481' to each side of the equation.
118x + 3481 + x2 = 378 + 3481

Reorder the terms:
3481 + 118x + x2 = 378 + 3481

Combine like terms: 378 + 3481 = 3859
3481 + 118x + x2 = 3859

Factor a perfect square on the left side:
(x + 59)(x + 59) = 3859

Calculate the square root of the right side: 62.120849962

Break this problem into two subproblems by setting 
(x + 59) equal to 62.120849962 and -62.120849962.

Subproblem 1

x + 59 = 62.120849962 Simplifying x + 59 = 62.120849962 Reorder the terms: 59 + x = 62.120849962 Solving 59 + x = 62.120849962 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-59' to each side of the equation. 59 + -59 + x = 62.120849962 + -59 Combine like terms: 59 + -59 = 0 0 + x = 62.120849962 + -59 x = 62.120849962 + -59 Combine like terms: 62.120849962 + -59 = 3.120849962 x = 3.120849962 Simplifying x = 3.120849962

Subproblem 2

x + 59 = -62.120849962 Simplifying x + 59 = -62.120849962 Reorder the terms: 59 + x = -62.120849962 Solving 59 + x = -62.120849962 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-59' to each side of the equation. 59 + -59 + x = -62.120849962 + -59 Combine like terms: 59 + -59 = 0 0 + x = -62.120849962 + -59 x = -62.120849962 + -59 Combine like terms: -62.120849962 + -59 = -121.120849962 x = -121.120849962 Simplifying x = -121.120849962

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.120849962, -121.120849962}

See similar equations:

| -6x^2+2+11x^2-13-5x= | | 13-52+f=34 | | 6x-1=3y+2 | | 5(c+9)=5(c-4) | | 2(1/3)x3(2/7) | | r^2-3r=2r+14 | | 2lne+3ln(x-1)=5 | | 5y-3+y+41=6y+40-2 | | 9x^2-14x-4+3x= | | x^-2=9/16 | | 24a/4 | | 19x-3=14+2x | | x^*2=9/16 | | 24a/4= | | Y=-6+3x+x^2 | | (3y+1)=23+23 | | 4xy^2z/8x^2y-4xy^2 | | 4=6-y | | -m^2+7m=0 | | [-6x-(3x+3)]=-4-[4(2x-3)-3x] | | 1.93+0.670= | | 25k^2=64 | | x^4+5=3 | | 0.25x^2+1.5x-2=0 | | x6/5=x/7 | | 6y^2+17y-28=0 | | 3s-25=-43+5s | | a^2+8a+29=12 | | 10+11c+c^2=0 | | 22/18=99/t | | -10(43)+0.35x=0.05(x-2) | | f(x)=Lnx |

Equations solver categories