c(2c+11)=10

Simple and best practice solution for c(2c+11)=10 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 c(2c+11)=10 equation:


Simplifying
c(2c + 11) = 10

Reorder the terms:
c(11 + 2c) = 10
(11 * c + 2c * c) = 10
(11c + 2c2) = 10

Solving
11c + 2c2 = 10

Solving for variable 'c'.

Reorder the terms:
-10 + 11c + 2c2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 11c + 2c2 = 0

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

Divide each side by '2'.
-5 + 5.5c + c2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + 5.5c + 5 + c2 = 0 + 5

Reorder the terms:
-5 + 5 + 5.5c + c2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 5.5c + c2 = 0 + 5
5.5c + c2 = 0 + 5

Combine like terms: 0 + 5 = 5
5.5c + c2 = 5

The c term is 5.5c.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5c + 7.5625 + c2 = 5 + 7.5625

Reorder the terms:
7.5625 + 5.5c + c2 = 5 + 7.5625

Combine like terms: 5 + 7.5625 = 12.5625
7.5625 + 5.5c + c2 = 12.5625

Factor a perfect square on the left side:
(c + 2.75)(c + 2.75) = 12.5625

Calculate the square root of the right side: 3.54436172

Break this problem into two subproblems by setting 
(c + 2.75) equal to 3.54436172 and -3.54436172.

Subproblem 1

c + 2.75 = 3.54436172 Simplifying c + 2.75 = 3.54436172 Reorder the terms: 2.75 + c = 3.54436172 Solving 2.75 + c = 3.54436172 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + c = 3.54436172 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + c = 3.54436172 + -2.75 c = 3.54436172 + -2.75 Combine like terms: 3.54436172 + -2.75 = 0.79436172 c = 0.79436172 Simplifying c = 0.79436172

Subproblem 2

c + 2.75 = -3.54436172 Simplifying c + 2.75 = -3.54436172 Reorder the terms: 2.75 + c = -3.54436172 Solving 2.75 + c = -3.54436172 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + c = -3.54436172 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + c = -3.54436172 + -2.75 c = -3.54436172 + -2.75 Combine like terms: -3.54436172 + -2.75 = -6.29436172 c = -6.29436172 Simplifying c = -6.29436172

Solution

The solution to the problem is based on the solutions from the subproblems. c = {0.79436172, -6.29436172}

See similar equations:

| t+96=2t | | 7x^2a+7xa^2=0 | | y=-9-9-2 | | 20x+23x=10-13 | | x+(x+2)(x+4)(x+6)= | | 4/7x-3=x | | 5(2x-5)-2(x+2)-16x= | | 3/8=3/-2 | | 3m-2m-14=m+14 | | r/4-5-6 | | 4a-2x=15 | | 4a-2x= | | 4sin^2x-4sinx-3=0 | | 6x-(3x+30)=6x-30 | | 15u^2-17u-42=0 | | 4+7n=18 | | 3x-3y=49 | | -16-6x=5(1+3x) | | 5x-2.9=8x+0.2 | | S=4lw+2pirh | | 4(y-2)=2y-10 | | 5x(x-3)-2=23 | | 8x+100=127 | | (X-1/2)=3(5-2X) | | (X-1/2)3(5-2X) | | 7v^2+15=38v | | K(x)=3x^3-18x^2+24x | | 6x+12=2x+36 | | 3(2x+4)=43 | | 7n^2+53n-23=1 | | 1.4+0.1x=0.6x-6.6 | | 9(x-1)=6x-12-4x |

Equations solver categories