4c^2+c-7=0

Simple and best practice solution for 4c^2+c-7=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 4c^2+c-7=0 equation:


Simplifying
4c2 + c + -7 = 0

Reorder the terms:
-7 + c + 4c2 = 0

Solving
-7 + c + 4c2 = 0

Solving for variable 'c'.

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

Divide each side by '4'.
-1.75 + 0.25c + c2 = 0

Move the constant term to the right:

Add '1.75' to each side of the equation.
-1.75 + 0.25c + 1.75 + c2 = 0 + 1.75

Reorder the terms:
-1.75 + 1.75 + 0.25c + c2 = 0 + 1.75

Combine like terms: -1.75 + 1.75 = 0.00
0.00 + 0.25c + c2 = 0 + 1.75
0.25c + c2 = 0 + 1.75

Combine like terms: 0 + 1.75 = 1.75
0.25c + c2 = 1.75

The c term is c.  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.
0.25c + 0.25 + c2 = 1.75 + 0.25

Reorder the terms:
0.25 + 0.25c + c2 = 1.75 + 0.25

Combine like terms: 1.75 + 0.25 = 2
0.25 + 0.25c + c2 = 2

Factor a perfect square on the left side:
(c + 0.5)(c + 0.5) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(c + 0.5) equal to 1.414213562 and -1.414213562.

Subproblem 1

c + 0.5 = 1.414213562 Simplifying c + 0.5 = 1.414213562 Reorder the terms: 0.5 + c = 1.414213562 Solving 0.5 + c = 1.414213562 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + c = 1.414213562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + c = 1.414213562 + -0.5 c = 1.414213562 + -0.5 Combine like terms: 1.414213562 + -0.5 = 0.914213562 c = 0.914213562 Simplifying c = 0.914213562

Subproblem 2

c + 0.5 = -1.414213562 Simplifying c + 0.5 = -1.414213562 Reorder the terms: 0.5 + c = -1.414213562 Solving 0.5 + c = -1.414213562 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + c = -1.414213562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + c = -1.414213562 + -0.5 c = -1.414213562 + -0.5 Combine like terms: -1.414213562 + -0.5 = -1.914213562 c = -1.914213562 Simplifying c = -1.914213562

Solution

The solution to the problem is based on the solutions from the subproblems. c = {0.914213562, -1.914213562}

See similar equations:

| 2(2a-1)+5= | | 1-10z+25z^2=0 | | 4x-1=6x+5 | | 6z^2-3z=0 | | -1/3+2z=-5/6 | | 10=5+5x | | 3/5-4/5=x | | 2.9=8.2+4b-9.7 | | 8n-17=18 | | 8x^2=-24x | | 17+2(1-x)=5-2(3-4x) | | S^2+30s+225=0 | | 9x-15y+18=4x+2y | | 50-20=a | | 8-48x=16 | | 4p^2+12pr+9r^2=0 | | 13x+10=-17+4x | | 4s^2-52s+144=0 | | 4x^3-21x^2+4=0 | | (y+95)+y=181 | | 7-2b=3b-3 | | 3x-9=-4+2x | | 4x+14=0 | | -3y+4= | | -2x-58=3x+2 | | 5(3x+5)+(6x-4)= | | 6(x-2)=-24 | | a^2+5a-84=0 | | s^2+10s-11=0 | | 4-6(2a+4a)= | | 9n^2+30n+25=0 | | 4d^2-4d+1=0 |

Equations solver categories