16x^2+35x=125

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Solution for 16x^2+35x=125 equation:


Simplifying
16x2 + 35x = 125

Reorder the terms:
35x + 16x2 = 125

Solving
35x + 16x2 = 125

Solving for variable 'x'.

Reorder the terms:
-125 + 35x + 16x2 = 125 + -125

Combine like terms: 125 + -125 = 0
-125 + 35x + 16x2 = 0

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

Divide each side by '16'.
-7.8125 + 2.1875x + x2 = 0

Move the constant term to the right:

Add '7.8125' to each side of the equation.
-7.8125 + 2.1875x + 7.8125 + x2 = 0 + 7.8125

Reorder the terms:
-7.8125 + 7.8125 + 2.1875x + x2 = 0 + 7.8125

Combine like terms: -7.8125 + 7.8125 = 0.0000
0.0000 + 2.1875x + x2 = 0 + 7.8125
2.1875x + x2 = 0 + 7.8125

Combine like terms: 0 + 7.8125 = 7.8125
2.1875x + x2 = 7.8125

The x term is 2.1875x.  Take half its coefficient (1.09375).
Square it (1.196289063) and add it to both sides.

Add '1.196289063' to each side of the equation.
2.1875x + 1.196289063 + x2 = 7.8125 + 1.196289063

Reorder the terms:
1.196289063 + 2.1875x + x2 = 7.8125 + 1.196289063

Combine like terms: 7.8125 + 1.196289063 = 9.008789063
1.196289063 + 2.1875x + x2 = 9.008789063

Factor a perfect square on the left side:
(x + 1.09375)(x + 1.09375) = 9.008789063

Calculate the square root of the right side: 3.001464486

Break this problem into two subproblems by setting 
(x + 1.09375) equal to 3.001464486 and -3.001464486.

Subproblem 1

x + 1.09375 = 3.001464486 Simplifying x + 1.09375 = 3.001464486 Reorder the terms: 1.09375 + x = 3.001464486 Solving 1.09375 + x = 3.001464486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.09375' to each side of the equation. 1.09375 + -1.09375 + x = 3.001464486 + -1.09375 Combine like terms: 1.09375 + -1.09375 = 0.00000 0.00000 + x = 3.001464486 + -1.09375 x = 3.001464486 + -1.09375 Combine like terms: 3.001464486 + -1.09375 = 1.907714486 x = 1.907714486 Simplifying x = 1.907714486

Subproblem 2

x + 1.09375 = -3.001464486 Simplifying x + 1.09375 = -3.001464486 Reorder the terms: 1.09375 + x = -3.001464486 Solving 1.09375 + x = -3.001464486 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.09375' to each side of the equation. 1.09375 + -1.09375 + x = -3.001464486 + -1.09375 Combine like terms: 1.09375 + -1.09375 = 0.00000 0.00000 + x = -3.001464486 + -1.09375 x = -3.001464486 + -1.09375 Combine like terms: -3.001464486 + -1.09375 = -4.095214486 x = -4.095214486 Simplifying x = -4.095214486

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.907714486, -4.095214486}

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