0=x^2-8x-60

Simple and best practice solution for 0=x^2-8x-60 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 0=x^2-8x-60 equation:


Simplifying
0 = x2 + -8x + -60

Reorder the terms:
0 = -60 + -8x + x2

Solving
0 = -60 + -8x + x2

Solving for variable 'x'.

Combine like terms: 0 + 60 = 60
60 + 8x + -1x2 = -60 + -8x + x2 + 60 + 8x + -1x2

Reorder the terms:
60 + 8x + -1x2 = -60 + 60 + -8x + 8x + x2 + -1x2

Combine like terms: -60 + 60 = 0
60 + 8x + -1x2 = 0 + -8x + 8x + x2 + -1x2
60 + 8x + -1x2 = -8x + 8x + x2 + -1x2

Combine like terms: -8x + 8x = 0
60 + 8x + -1x2 = 0 + x2 + -1x2
60 + 8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
60 + 8x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-60 + -8x + x2 = 0

Move the constant term to the right:

Add '60' to each side of the equation.
-60 + -8x + 60 + x2 = 0 + 60

Reorder the terms:
-60 + 60 + -8x + x2 = 0 + 60

Combine like terms: -60 + 60 = 0
0 + -8x + x2 = 0 + 60
-8x + x2 = 0 + 60

Combine like terms: 0 + 60 = 60
-8x + x2 = 60

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 60 + 16

Reorder the terms:
16 + -8x + x2 = 60 + 16

Combine like terms: 60 + 16 = 76
16 + -8x + x2 = 76

Factor a perfect square on the left side:
(x + -4)(x + -4) = 76

Calculate the square root of the right side: 8.717797887

Break this problem into two subproblems by setting 
(x + -4) equal to 8.717797887 and -8.717797887.

Subproblem 1

x + -4 = 8.717797887 Simplifying x + -4 = 8.717797887 Reorder the terms: -4 + x = 8.717797887 Solving -4 + x = 8.717797887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 8.717797887 + 4 Combine like terms: -4 + 4 = 0 0 + x = 8.717797887 + 4 x = 8.717797887 + 4 Combine like terms: 8.717797887 + 4 = 12.717797887 x = 12.717797887 Simplifying x = 12.717797887

Subproblem 2

x + -4 = -8.717797887 Simplifying x + -4 = -8.717797887 Reorder the terms: -4 + x = -8.717797887 Solving -4 + x = -8.717797887 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -8.717797887 + 4 Combine like terms: -4 + 4 = 0 0 + x = -8.717797887 + 4 x = -8.717797887 + 4 Combine like terms: -8.717797887 + 4 = -4.717797887 x = -4.717797887 Simplifying x = -4.717797887

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.717797887, -4.717797887}

See similar equations:

| [6y-3]+8=35 | | e^3lnx=27 | | m^2+14+48=0 | | 8xy=10000 | | 9p=-8p | | 7h+3=5h+9 | | -12x+24x=48 | | y=-3x^2+18+1 | | logx+logx^2=5 | | [2x(x-4)]+7=25 | | 2(2h+1)=3(h-4) | | 12-3h=-8 | | 2x+(x-6)=15-(x+1) | | 5ln(x-4)=10 | | 2tan^3x=2 | | X=1/2(3X+19) | | 6y^2+14y=10y-5 | | 4a-7+3(a-4)=9 | | 2.5x+0.1x-3x= | | 64y^2-16=0 | | 4(2h-5)=5h+4 | | 7x-10=11x+4 | | 42=-31.4+p | | 0.11y+0.02(y+3000)=1230 | | 7x+8=6x+6 | | 5(5+20)=x(16+x) | | 10a(a+4)= | | (5x-30)+(3x+6)=180 | | 2y(5y^3-6y^2+y)= | | 3t-12=-3 | | .25x^2+.25x-5=0 | | (1.5a^3)(4a^6)= |

Equations solver categories