1728+84x+x^2=169

Simple and best practice solution for 1728+84x+x^2=169 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 1728+84x+x^2=169 equation:


Simplifying
1728 + 84x + x2 = 169

Solving
1728 + 84x + x2 = 169

Solving for variable 'x'.

Reorder the terms:
1728 + -169 + 84x + x2 = 169 + -169

Combine like terms: 1728 + -169 = 1559
1559 + 84x + x2 = 169 + -169

Combine like terms: 169 + -169 = 0
1559 + 84x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-1559' to each side of the equation.
1559 + 84x + -1559 + x2 = 0 + -1559

Reorder the terms:
1559 + -1559 + 84x + x2 = 0 + -1559

Combine like terms: 1559 + -1559 = 0
0 + 84x + x2 = 0 + -1559
84x + x2 = 0 + -1559

Combine like terms: 0 + -1559 = -1559
84x + x2 = -1559

The x term is 84x.  Take half its coefficient (42).
Square it (1764) and add it to both sides.

Add '1764' to each side of the equation.
84x + 1764 + x2 = -1559 + 1764

Reorder the terms:
1764 + 84x + x2 = -1559 + 1764

Combine like terms: -1559 + 1764 = 205
1764 + 84x + x2 = 205

Factor a perfect square on the left side:
(x + 42)(x + 42) = 205

Calculate the square root of the right side: 14.317821063

Break this problem into two subproblems by setting 
(x + 42) equal to 14.317821063 and -14.317821063.

Subproblem 1

x + 42 = 14.317821063 Simplifying x + 42 = 14.317821063 Reorder the terms: 42 + x = 14.317821063 Solving 42 + x = 14.317821063 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + x = 14.317821063 + -42 Combine like terms: 42 + -42 = 0 0 + x = 14.317821063 + -42 x = 14.317821063 + -42 Combine like terms: 14.317821063 + -42 = -27.682178937 x = -27.682178937 Simplifying x = -27.682178937

Subproblem 2

x + 42 = -14.317821063 Simplifying x + 42 = -14.317821063 Reorder the terms: 42 + x = -14.317821063 Solving 42 + x = -14.317821063 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + x = -14.317821063 + -42 Combine like terms: 42 + -42 = 0 0 + x = -14.317821063 + -42 x = -14.317821063 + -42 Combine like terms: -14.317821063 + -42 = -56.317821063 x = -56.317821063 Simplifying x = -56.317821063

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-27.682178937, -56.317821063}

See similar equations:

| ln(x)+ln(x+5)=ln(36) | | -3(x-12)=60 | | -15x=-480 | | px(-0.4)=9 | | -2y-4=6x | | 4x-2(-1-1x)=2(3x-2) | | 4j-9j+3=32 | | 56000=35000*(1+0,025*x) | | 0.009(2-k)+0.06(k-1)=1 | | -2(x-10)= | | 120000=150000*0,08*x | | 3x^2+x^2+50=42 | | 24a-22=-4 | | 120000=150000.0,08.x | | 4(-x-6)=12 | | -8(b-12)=144 | | 4x+22=-28 | | N-45=12 | | 100y=3x^2+3x+950 | | y=.5(x-3)(X+1) | | (4x+5)/6(-2x-1)/3=x | | (4x+5)/6-(2x-1)/3=x | | .5x^2= | | (36/81)1/2 | | V/3+9/3=-80 | | 4x+5/6-2x-1/3=x | | x+2x=48-5x | | 5x=8+9x | | 5x=9x+8 | | 5v^4+4=-21v | | 0.008(9-k)+0.09(k-8)=1 | | g/2=h |

Equations solver categories