-169+d^2+(d-7)=0

Simple and best practice solution for -169+d^2+(d-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 -169+d^2+(d-7)=0 equation:


Simplifying
-169 + d2 + (d + -7) = 0

Reorder the terms:
-169 + d2 + (-7 + d) = 0

Remove parenthesis around (-7 + d)
-169 + d2 + -7 + d = 0

Reorder the terms:
-169 + -7 + d + d2 = 0

Combine like terms: -169 + -7 = -176
-176 + d + d2 = 0

Solving
-176 + d + d2 = 0

Solving for variable 'd'.

Begin completing the square.

Move the constant term to the right:

Add '176' to each side of the equation.
-176 + d + 176 + d2 = 0 + 176

Reorder the terms:
-176 + 176 + d + d2 = 0 + 176

Combine like terms: -176 + 176 = 0
0 + d + d2 = 0 + 176
d + d2 = 0 + 176

Combine like terms: 0 + 176 = 176
d + d2 = 176

The d term is d.  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.
d + 0.25 + d2 = 176 + 0.25

Reorder the terms:
0.25 + d + d2 = 176 + 0.25

Combine like terms: 176 + 0.25 = 176.25
0.25 + d + d2 = 176.25

Factor a perfect square on the left side:
(d + 0.5)(d + 0.5) = 176.25

Calculate the square root of the right side: 13.275918047

Break this problem into two subproblems by setting 
(d + 0.5) equal to 13.275918047 and -13.275918047.

Subproblem 1

d + 0.5 = 13.275918047 Simplifying d + 0.5 = 13.275918047 Reorder the terms: 0.5 + d = 13.275918047 Solving 0.5 + d = 13.275918047 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + d = 13.275918047 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + d = 13.275918047 + -0.5 d = 13.275918047 + -0.5 Combine like terms: 13.275918047 + -0.5 = 12.775918047 d = 12.775918047 Simplifying d = 12.775918047

Subproblem 2

d + 0.5 = -13.275918047 Simplifying d + 0.5 = -13.275918047 Reorder the terms: 0.5 + d = -13.275918047 Solving 0.5 + d = -13.275918047 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + d = -13.275918047 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + d = -13.275918047 + -0.5 d = -13.275918047 + -0.5 Combine like terms: -13.275918047 + -0.5 = -13.775918047 d = -13.775918047 Simplifying d = -13.775918047

Solution

The solution to the problem is based on the solutions from the subproblems. d = {12.775918047, -13.775918047}

See similar equations:

| -3(6x-9)+8=-18x+35 | | 116-v=193 | | 6-4x=-2(3x-4) | | 24(x+13)=12(x-10) | | 5(x-8)-2x=-16 | | 2x=3*(x-25000) | | 0.16(y-8)+0.12y=0.08y-1.8 | | 10t-14-3t= | | 9x^11=150300 | | 15x+10=16x+3 | | 14b-10(9+13b)=16b-90 | | 15x+12=5x+8 | | 98=5w+8 | | 3y+12=72 | | -8300+x^2-10x+44=0 | | 50=5y-10 | | 3(x-3)+6x=-9+7x | | 8(v+4)-4v=2(2v+3)-22 | | -27v=40 | | x+6x^2=0 | | 3(4-8n)=84 | | 2/3r=12 | | 2(x+8)+2x=88 | | -x^2+40x+300=0 | | Y^9=2 | | -50+x^2+(x+6)(x+6)=0 | | 5(m-4x)=2 | | 5(m-4x)=25 | | 31-16=3(x-1) | | cot*cos-cos=0 | | -24z^2-15z-6+3z(8z+5)=0 | | 32+2y-10=11y-14-3y |

Equations solver categories