8c^2-27c-24=0

Simple and best practice solution for 8c^2-27c-24=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 8c^2-27c-24=0 equation:


Simplifying
8c2 + -27c + -24 = 0

Reorder the terms:
-24 + -27c + 8c2 = 0

Solving
-24 + -27c + 8c2 = 0

Solving for variable 'c'.

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

Divide each side by '8'.
-3 + -3.375c + c2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -3.375c + 3 + c2 = 0 + 3

Reorder the terms:
-3 + 3 + -3.375c + c2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -3.375c + c2 = 0 + 3
-3.375c + c2 = 0 + 3

Combine like terms: 0 + 3 = 3
-3.375c + c2 = 3

The c term is -3.375c.  Take half its coefficient (-1.6875).
Square it (2.84765625) and add it to both sides.

Add '2.84765625' to each side of the equation.
-3.375c + 2.84765625 + c2 = 3 + 2.84765625

Reorder the terms:
2.84765625 + -3.375c + c2 = 3 + 2.84765625

Combine like terms: 3 + 2.84765625 = 5.84765625
2.84765625 + -3.375c + c2 = 5.84765625

Factor a perfect square on the left side:
(c + -1.6875)(c + -1.6875) = 5.84765625

Calculate the square root of the right side: 2.418192765

Break this problem into two subproblems by setting 
(c + -1.6875) equal to 2.418192765 and -2.418192765.

Subproblem 1

c + -1.6875 = 2.418192765 Simplifying c + -1.6875 = 2.418192765 Reorder the terms: -1.6875 + c = 2.418192765 Solving -1.6875 + c = 2.418192765 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.6875' to each side of the equation. -1.6875 + 1.6875 + c = 2.418192765 + 1.6875 Combine like terms: -1.6875 + 1.6875 = 0.0000 0.0000 + c = 2.418192765 + 1.6875 c = 2.418192765 + 1.6875 Combine like terms: 2.418192765 + 1.6875 = 4.105692765 c = 4.105692765 Simplifying c = 4.105692765

Subproblem 2

c + -1.6875 = -2.418192765 Simplifying c + -1.6875 = -2.418192765 Reorder the terms: -1.6875 + c = -2.418192765 Solving -1.6875 + c = -2.418192765 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.6875' to each side of the equation. -1.6875 + 1.6875 + c = -2.418192765 + 1.6875 Combine like terms: -1.6875 + 1.6875 = 0.0000 0.0000 + c = -2.418192765 + 1.6875 c = -2.418192765 + 1.6875 Combine like terms: -2.418192765 + 1.6875 = -0.730692765 c = -0.730692765 Simplifying c = -0.730692765

Solution

The solution to the problem is based on the solutions from the subproblems. c = {4.105692765, -0.730692765}

See similar equations:

| 6=g/1.5 | | y^2+18y+77= | | -2x+4x-4=x+6-14 | | d=-16t^2+16 | | (1+y)=-3+3(1+y) | | 3p+31-5p=25 | | 57-x/5=41.5 | | -3(3x-1)+6=6(x+4) | | .27x+2=.35x | | 4x+2x=30+6 | | 4=-9+w | | 4y+32+2y=2 | | a(n)=8+(n-1)(6) | | x+2x-20=4 | | x=480-(25-x)*.999999 | | -16=n+(-15) | | x+x-7=15 | | -1/4z=4 | | (X-8)(4)=(5)(2) | | 17-32p=17 | | 29=2.25x+8.75 | | 9(4+3n)= | | (3x+5)80=10 | | 2(2+6x)=88 | | 8u-7u=18 | | 3(4-5p)=-63 | | -0.5b=-20 | | 4.9x^2+9x=0 | | .49x=2.45 | | x^3+2y^2=36 | | 3y^2-y+169=0 | | 18x+2=17x+8 |

Equations solver categories