.01x^2+.1x-97.76=0

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Solution for .01x^2+.1x-97.76=0 equation:


Simplifying
0.01x2 + 0.1x + -97.76 = 0

Reorder the terms:
-97.76 + 0.1x + 0.01x2 = 0

Solving
-97.76 + 0.1x + 0.01x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.01'.
-9776 + 10x + x2 = 0

Move the constant term to the right:

Add '9776' to each side of the equation.
-9776 + 10x + 9776 + x2 = 0 + 9776

Reorder the terms:
-9776 + 9776 + 10x + x2 = 0 + 9776

Combine like terms: -9776 + 9776 = 0
0 + 10x + x2 = 0 + 9776
10x + x2 = 0 + 9776

Combine like terms: 0 + 9776 = 9776
10x + x2 = 9776

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 9776 + 25

Reorder the terms:
25 + 10x + x2 = 9776 + 25

Combine like terms: 9776 + 25 = 9801
25 + 10x + x2 = 9801

Factor a perfect square on the left side:
(x + 5)(x + 5) = 9801

Calculate the square root of the right side: 99

Break this problem into two subproblems by setting 
(x + 5) equal to 99 and -99.

Subproblem 1

x + 5 = 99 Simplifying x + 5 = 99 Reorder the terms: 5 + x = 99 Solving 5 + x = 99 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 99 + -5 Combine like terms: 5 + -5 = 0 0 + x = 99 + -5 x = 99 + -5 Combine like terms: 99 + -5 = 94 x = 94 Simplifying x = 94

Subproblem 2

x + 5 = -99 Simplifying x + 5 = -99 Reorder the terms: 5 + x = -99 Solving 5 + x = -99 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -99 + -5 Combine like terms: 5 + -5 = 0 0 + x = -99 + -5 x = -99 + -5 Combine like terms: -99 + -5 = -104 x = -104 Simplifying x = -104

Solution

The solution to the problem is based on the solutions from the subproblems. x = {94, -104}

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