-16x^2+33x+2=18

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Solution for -16x^2+33x+2=18 equation:


Simplifying
-16x2 + 33x + 2 = 18

Reorder the terms:
2 + 33x + -16x2 = 18

Solving
2 + 33x + -16x2 = 18

Solving for variable 'x'.

Reorder the terms:
2 + -18 + 33x + -16x2 = 18 + -18

Combine like terms: 2 + -18 = -16
-16 + 33x + -16x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-16 + 33x + -16x2 = 0

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

Divide each side by '-16'.
1 + -2.0625x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -2.0625x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -2.0625x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2.0625x + x2 = 0 + -1
-2.0625x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-2.0625x + x2 = -1

The x term is -2.0625x.  Take half its coefficient (-1.03125).
Square it (1.063476563) and add it to both sides.

Add '1.063476563' to each side of the equation.
-2.0625x + 1.063476563 + x2 = -1 + 1.063476563

Reorder the terms:
1.063476563 + -2.0625x + x2 = -1 + 1.063476563

Combine like terms: -1 + 1.063476563 = 0.063476563
1.063476563 + -2.0625x + x2 = 0.063476563

Factor a perfect square on the left side:
(x + -1.03125)(x + -1.03125) = 0.063476563

Calculate the square root of the right side: 0.251945556

Break this problem into two subproblems by setting 
(x + -1.03125) equal to 0.251945556 and -0.251945556.

Subproblem 1

x + -1.03125 = 0.251945556 Simplifying x + -1.03125 = 0.251945556 Reorder the terms: -1.03125 + x = 0.251945556 Solving -1.03125 + x = 0.251945556 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.03125' to each side of the equation. -1.03125 + 1.03125 + x = 0.251945556 + 1.03125 Combine like terms: -1.03125 + 1.03125 = 0.00000 0.00000 + x = 0.251945556 + 1.03125 x = 0.251945556 + 1.03125 Combine like terms: 0.251945556 + 1.03125 = 1.283195556 x = 1.283195556 Simplifying x = 1.283195556

Subproblem 2

x + -1.03125 = -0.251945556 Simplifying x + -1.03125 = -0.251945556 Reorder the terms: -1.03125 + x = -0.251945556 Solving -1.03125 + x = -0.251945556 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.03125' to each side of the equation. -1.03125 + 1.03125 + x = -0.251945556 + 1.03125 Combine like terms: -1.03125 + 1.03125 = 0.00000 0.00000 + x = -0.251945556 + 1.03125 x = -0.251945556 + 1.03125 Combine like terms: -0.251945556 + 1.03125 = 0.779304444 x = 0.779304444 Simplifying x = 0.779304444

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.283195556, 0.779304444}

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