b^2+250b=1225

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Solution for b^2+250b=1225 equation:


Simplifying
b2 + 250b = 1225

Reorder the terms:
250b + b2 = 1225

Solving
250b + b2 = 1225

Solving for variable 'b'.

Reorder the terms:
-1225 + 250b + b2 = 1225 + -1225

Combine like terms: 1225 + -1225 = 0
-1225 + 250b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1225' to each side of the equation.
-1225 + 250b + 1225 + b2 = 0 + 1225

Reorder the terms:
-1225 + 1225 + 250b + b2 = 0 + 1225

Combine like terms: -1225 + 1225 = 0
0 + 250b + b2 = 0 + 1225
250b + b2 = 0 + 1225

Combine like terms: 0 + 1225 = 1225
250b + b2 = 1225

The b term is 250b.  Take half its coefficient (125).
Square it (15625) and add it to both sides.

Add '15625' to each side of the equation.
250b + 15625 + b2 = 1225 + 15625

Reorder the terms:
15625 + 250b + b2 = 1225 + 15625

Combine like terms: 1225 + 15625 = 16850
15625 + 250b + b2 = 16850

Factor a perfect square on the left side:
(b + 125)(b + 125) = 16850

Calculate the square root of the right side: 129.807549857

Break this problem into two subproblems by setting 
(b + 125) equal to 129.807549857 and -129.807549857.

Subproblem 1

b + 125 = 129.807549857 Simplifying b + 125 = 129.807549857 Reorder the terms: 125 + b = 129.807549857 Solving 125 + b = 129.807549857 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-125' to each side of the equation. 125 + -125 + b = 129.807549857 + -125 Combine like terms: 125 + -125 = 0 0 + b = 129.807549857 + -125 b = 129.807549857 + -125 Combine like terms: 129.807549857 + -125 = 4.807549857 b = 4.807549857 Simplifying b = 4.807549857

Subproblem 2

b + 125 = -129.807549857 Simplifying b + 125 = -129.807549857 Reorder the terms: 125 + b = -129.807549857 Solving 125 + b = -129.807549857 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-125' to each side of the equation. 125 + -125 + b = -129.807549857 + -125 Combine like terms: 125 + -125 = 0 0 + b = -129.807549857 + -125 b = -129.807549857 + -125 Combine like terms: -129.807549857 + -125 = -254.807549857 b = -254.807549857 Simplifying b = -254.807549857

Solution

The solution to the problem is based on the solutions from the subproblems. b = {4.807549857, -254.807549857}

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