8f+f(f-6)=57-(17-f)

Simple and best practice solution for 8f+f(f-6)=57-(17-f) 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 8f+f(f-6)=57-(17-f) equation:


Simplifying
8f + f(f + -6) = 57 + -1(17 + -1f)

Reorder the terms:
8f + f(-6 + f) = 57 + -1(17 + -1f)
8f + (-6 * f + f * f) = 57 + -1(17 + -1f)
8f + (-6f + f2) = 57 + -1(17 + -1f)

Combine like terms: 8f + -6f = 2f
2f + f2 = 57 + -1(17 + -1f)
2f + f2 = 57 + (17 * -1 + -1f * -1)
2f + f2 = 57 + (-17 + 1f)

Combine like terms: 57 + -17 = 40
2f + f2 = 40 + 1f

Solving
2f + f2 = 40 + 1f

Solving for variable 'f'.

Reorder the terms:
-40 + 2f + -1f + f2 = 40 + 1f + -40 + -1f

Combine like terms: 2f + -1f = 1f
-40 + 1f + f2 = 40 + 1f + -40 + -1f

Reorder the terms:
-40 + 1f + f2 = 40 + -40 + 1f + -1f

Combine like terms: 40 + -40 = 0
-40 + 1f + f2 = 0 + 1f + -1f
-40 + 1f + f2 = 1f + -1f

Combine like terms: 1f + -1f = 0
-40 + 1f + f2 = 0

Begin completing the square.

Move the constant term to the right:

Add '40' to each side of the equation.
-40 + 1f + 40 + f2 = 0 + 40

Reorder the terms:
-40 + 40 + 1f + f2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 1f + f2 = 0 + 40
1f + f2 = 0 + 40

Combine like terms: 0 + 40 = 40
1f + f2 = 40

The f term is 1f.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
f + 0.25 + f2 = 40 + 0.25

Reorder the terms:
0.25 + f + f2 = 40 + 0.25

Combine like terms: 40 + 0.25 = 40.25
0.25 + f + f2 = 40.25

Factor a perfect square on the left side:
(f + 0.5)(f + 0.5) = 40.25

Calculate the square root of the right side: 6.34428877

Break this problem into two subproblems by setting 
(f + 0.5) equal to 6.34428877 and -6.34428877.

Subproblem 1

f + 0.5 = 6.34428877 Simplifying f + 0.5 = 6.34428877 Reorder the terms: 0.5 + f = 6.34428877 Solving 0.5 + f = 6.34428877 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + f = 6.34428877 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + f = 6.34428877 + -0.5 f = 6.34428877 + -0.5 Combine like terms: 6.34428877 + -0.5 = 5.84428877 f = 5.84428877 Simplifying f = 5.84428877

Subproblem 2

f + 0.5 = -6.34428877 Simplifying f + 0.5 = -6.34428877 Reorder the terms: 0.5 + f = -6.34428877 Solving 0.5 + f = -6.34428877 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + f = -6.34428877 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + f = -6.34428877 + -0.5 f = -6.34428877 + -0.5 Combine like terms: -6.34428877 + -0.5 = -6.84428877 f = -6.84428877 Simplifying f = -6.84428877

Solution

The solution to the problem is based on the solutions from the subproblems. f = {5.84428877, -6.84428877}

See similar equations:

| 8-(2z-9)=1-3z | | 28+13=25y+26 | | .2(x+90)+.2x=22 | | 2f-3=5(2f-7) | | 4d-13+7d=-2 | | 23=-4m+m | | 2y+4=3y | | 3(2x-5)-2(x-1)=3 | | 1/8(x+y+z)=w | | 6(k-1)-(3-3k)=8k | | 22-5(3-2)=2n-(5n+32) | | -5w+1/5=-2/3w-3/5 | | 7(c+7)=6c-3 | | 48-7x=2x+18 | | .2(x+40)+1.2x=57 | | 9x-2=21x+6 | | 8y+9-2y=7+5y+1 | | 5y/5=2x+26/5 | | 9x-2=21+6 | | (4x)^1/2=6 | | B-2=5 | | 8(y+7)=2+9y | | 4/3w-6=-7/2w+5/3 | | -7/5w+2/3=-7w-7/3 | | 1/3m+2/3m=-4 | | .1(x+40)+.1=5 | | 14-y=12 | | 168-7x=20x+21 | | 5z+4z=8z+3 | | 3x+4(2x-1)=7 | | c=174+14 | | 28-(x-8)=5x-4 |

Equations solver categories