d^2+14d=3

Simple and best practice solution for d^2+14d=3 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 d^2+14d=3 equation:


Simplifying
d2 + 14d = 3

Reorder the terms:
14d + d2 = 3

Solving
14d + d2 = 3

Solving for variable 'd'.

Reorder the terms:
-3 + 14d + d2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + 14d + d2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 14d + 3 + d2 = 0 + 3

Reorder the terms:
-3 + 3 + 14d + d2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 14d + d2 = 0 + 3
14d + d2 = 0 + 3

Combine like terms: 0 + 3 = 3
14d + d2 = 3

The d term is 14d.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14d + 49 + d2 = 3 + 49

Reorder the terms:
49 + 14d + d2 = 3 + 49

Combine like terms: 3 + 49 = 52
49 + 14d + d2 = 52

Factor a perfect square on the left side:
(d + 7)(d + 7) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(d + 7) equal to 7.211102551 and -7.211102551.

Subproblem 1

d + 7 = 7.211102551 Simplifying d + 7 = 7.211102551 Reorder the terms: 7 + d = 7.211102551 Solving 7 + d = 7.211102551 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + d = 7.211102551 + -7 Combine like terms: 7 + -7 = 0 0 + d = 7.211102551 + -7 d = 7.211102551 + -7 Combine like terms: 7.211102551 + -7 = 0.211102551 d = 0.211102551 Simplifying d = 0.211102551

Subproblem 2

d + 7 = -7.211102551 Simplifying d + 7 = -7.211102551 Reorder the terms: 7 + d = -7.211102551 Solving 7 + d = -7.211102551 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + d = -7.211102551 + -7 Combine like terms: 7 + -7 = 0 0 + d = -7.211102551 + -7 d = -7.211102551 + -7 Combine like terms: -7.211102551 + -7 = -14.211102551 d = -14.211102551 Simplifying d = -14.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. d = {0.211102551, -14.211102551}

See similar equations:

| 3g+4=g+6 | | 2(0-6)=3(0)-4-0 | | 3t-21=-41+8t | | x^2+5x-5x+18=-9 | | 5-7x=81-35x | | 11(x-24)/2 | | x^2+30x-49=0 | | 4x^2-9x+10=2x+4 | | 5d+-17=2 | | 7=5x+12 | | 5x-7=-19+9x | | 8x^2+10x+3=O | | 6-x=3,5 | | z^2-28z=11 | | 91=-28+x | | y^2+10y-1=0 | | -0.5(4v-3)+6v=-5v+0.2(-5v+8) | | 10x+26=5x+126 | | 0,95-x=0,05 | | -2u/3+6=-6u/5-1/3 | | 3(g+6)=15 | | 6(8x+6x)=-2 | | 432=4x+4 | | r^2+18.5r-36=0 | | x^2+14x-80=0 | | 12=7/10g-44 | | t^2-12t=-19 | | 4x^2-31x+53=-3x+8 | | h^2-14h-11=0 | | 48000=x-.1x | | 6x^2-49X-45= | | 16g-4=32 |

Equations solver categories