28x^2-11x-62=0

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Solution for 28x^2-11x-62=0 equation:


Simplifying
28x2 + -11x + -62 = 0

Reorder the terms:
-62 + -11x + 28x2 = 0

Solving
-62 + -11x + 28x2 = 0

Solving for variable 'x'.

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

Divide each side by '28'.
-2.214285714 + -0.3928571429x + x2 = 0

Move the constant term to the right:

Add '2.214285714' to each side of the equation.
-2.214285714 + -0.3928571429x + 2.214285714 + x2 = 0 + 2.214285714

Reorder the terms:
-2.214285714 + 2.214285714 + -0.3928571429x + x2 = 0 + 2.214285714

Combine like terms: -2.214285714 + 2.214285714 = 0.000000000
0.000000000 + -0.3928571429x + x2 = 0 + 2.214285714
-0.3928571429x + x2 = 0 + 2.214285714

Combine like terms: 0 + 2.214285714 = 2.214285714
-0.3928571429x + x2 = 2.214285714

The x term is -0.3928571429x.  Take half its coefficient (-0.1964285715).
Square it (0.03858418370) and add it to both sides.

Add '0.03858418370' to each side of the equation.
-0.3928571429x + 0.03858418370 + x2 = 2.214285714 + 0.03858418370

Reorder the terms:
0.03858418370 + -0.3928571429x + x2 = 2.214285714 + 0.03858418370

Combine like terms: 2.214285714 + 0.03858418370 = 2.2528698977
0.03858418370 + -0.3928571429x + x2 = 2.2528698977

Factor a perfect square on the left side:
(x + -0.1964285715)(x + -0.1964285715) = 2.2528698977

Calculate the square root of the right side: 1.500956328

Break this problem into two subproblems by setting 
(x + -0.1964285715) equal to 1.500956328 and -1.500956328.

Subproblem 1

x + -0.1964285715 = 1.500956328 Simplifying x + -0.1964285715 = 1.500956328 Reorder the terms: -0.1964285715 + x = 1.500956328 Solving -0.1964285715 + x = 1.500956328 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1964285715' to each side of the equation. -0.1964285715 + 0.1964285715 + x = 1.500956328 + 0.1964285715 Combine like terms: -0.1964285715 + 0.1964285715 = 0.0000000000 0.0000000000 + x = 1.500956328 + 0.1964285715 x = 1.500956328 + 0.1964285715 Combine like terms: 1.500956328 + 0.1964285715 = 1.6973848995 x = 1.6973848995 Simplifying x = 1.6973848995

Subproblem 2

x + -0.1964285715 = -1.500956328 Simplifying x + -0.1964285715 = -1.500956328 Reorder the terms: -0.1964285715 + x = -1.500956328 Solving -0.1964285715 + x = -1.500956328 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1964285715' to each side of the equation. -0.1964285715 + 0.1964285715 + x = -1.500956328 + 0.1964285715 Combine like terms: -0.1964285715 + 0.1964285715 = 0.0000000000 0.0000000000 + x = -1.500956328 + 0.1964285715 x = -1.500956328 + 0.1964285715 Combine like terms: -1.500956328 + 0.1964285715 = -1.3045277565 x = -1.3045277565 Simplifying x = -1.3045277565

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.6973848995, -1.3045277565}

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