x^2+6x-76=0

Simple and best practice solution for x^2+6x-76=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+6x-76=0 equation:


Simplifying
x2 + 6x + -76 = 0

Reorder the terms:
-76 + 6x + x2 = 0

Solving
-76 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '76' to each side of the equation.
-76 + 6x + 76 + x2 = 0 + 76

Reorder the terms:
-76 + 76 + 6x + x2 = 0 + 76

Combine like terms: -76 + 76 = 0
0 + 6x + x2 = 0 + 76
6x + x2 = 0 + 76

Combine like terms: 0 + 76 = 76
6x + x2 = 76

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 76 + 9

Reorder the terms:
9 + 6x + x2 = 76 + 9

Combine like terms: 76 + 9 = 85
9 + 6x + x2 = 85

Factor a perfect square on the left side:
(x + 3)(x + 3) = 85

Calculate the square root of the right side: 9.219544457

Break this problem into two subproblems by setting 
(x + 3) equal to 9.219544457 and -9.219544457.

Subproblem 1

x + 3 = 9.219544457 Simplifying x + 3 = 9.219544457 Reorder the terms: 3 + x = 9.219544457 Solving 3 + x = 9.219544457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 9.219544457 + -3 Combine like terms: 3 + -3 = 0 0 + x = 9.219544457 + -3 x = 9.219544457 + -3 Combine like terms: 9.219544457 + -3 = 6.219544457 x = 6.219544457 Simplifying x = 6.219544457

Subproblem 2

x + 3 = -9.219544457 Simplifying x + 3 = -9.219544457 Reorder the terms: 3 + x = -9.219544457 Solving 3 + x = -9.219544457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -9.219544457 + -3 Combine like terms: 3 + -3 = 0 0 + x = -9.219544457 + -3 x = -9.219544457 + -3 Combine like terms: -9.219544457 + -3 = -12.219544457 x = -12.219544457 Simplifying x = -12.219544457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.219544457, -12.219544457}

See similar equations:

| 3x^2=12x-3 | | V=4.3 | | p(p+q)-q(p+q)=0 | | g=v+k | | 7p+8p+29=59 | | X+mod(2x-1)=3 | | sqrtx+56=x | | 4x+8=4x+7 | | 6y=184+4x | | xln(x)-x=0 | | 5+8q=10+7q | | (2x+9)(8x-3)=0 | | t=v+k-g | | 3p+7=19 | | -6x+3(4x+3)=-99 | | v^2-2v-99=0 | | x+2(sqrtx)+1=0 | | 3y+1=7-4x | | 4x+1=6x-41e | | 4a(3a-4)=0 | | F=32+9.5c | | 6x+4+3r-13=126 | | t=v+tg | | Z+3(2z+5)=29 | | 64x^2-5=4 | | 3x+10=2x-8 | | 5v-2=10 | | 2x-3=2(x-9) | | 21x+3(5*7)=71 | | 2(a-4)+2=4a+6 | | -4-6m^2=-58 | | 4x=2xz-1 |

Equations solver categories