148+5.2x-4.9x^2=

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Solution for 148+5.2x-4.9x^2= equation:


Simplifying
148 + 5.2x + -4.9x2 = 0

Solving
148 + 5.2x + -4.9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
-30.20408163 + -1.06122449x + x2 = 0

Move the constant term to the right:

Add '30.20408163' to each side of the equation.
-30.20408163 + -1.06122449x + 30.20408163 + x2 = 0 + 30.20408163

Reorder the terms:
-30.20408163 + 30.20408163 + -1.06122449x + x2 = 0 + 30.20408163

Combine like terms: -30.20408163 + 30.20408163 = 0.00000000
0.00000000 + -1.06122449x + x2 = 0 + 30.20408163
-1.06122449x + x2 = 0 + 30.20408163

Combine like terms: 0 + 30.20408163 = 30.20408163
-1.06122449x + x2 = 30.20408163

The x term is -1.06122449x.  Take half its coefficient (-0.530612245).
Square it (0.2815493545) and add it to both sides.

Add '0.2815493545' to each side of the equation.
-1.06122449x + 0.2815493545 + x2 = 30.20408163 + 0.2815493545

Reorder the terms:
0.2815493545 + -1.06122449x + x2 = 30.20408163 + 0.2815493545

Combine like terms: 30.20408163 + 0.2815493545 = 30.4856309845
0.2815493545 + -1.06122449x + x2 = 30.4856309845

Factor a perfect square on the left side:
(x + -0.530612245)(x + -0.530612245) = 30.4856309845

Calculate the square root of the right side: 5.521379446

Break this problem into two subproblems by setting 
(x + -0.530612245) equal to 5.521379446 and -5.521379446.

Subproblem 1

x + -0.530612245 = 5.521379446 Simplifying x + -0.530612245 = 5.521379446 Reorder the terms: -0.530612245 + x = 5.521379446 Solving -0.530612245 + x = 5.521379446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.530612245' to each side of the equation. -0.530612245 + 0.530612245 + x = 5.521379446 + 0.530612245 Combine like terms: -0.530612245 + 0.530612245 = 0.000000000 0.000000000 + x = 5.521379446 + 0.530612245 x = 5.521379446 + 0.530612245 Combine like terms: 5.521379446 + 0.530612245 = 6.051991691 x = 6.051991691 Simplifying x = 6.051991691

Subproblem 2

x + -0.530612245 = -5.521379446 Simplifying x + -0.530612245 = -5.521379446 Reorder the terms: -0.530612245 + x = -5.521379446 Solving -0.530612245 + x = -5.521379446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.530612245' to each side of the equation. -0.530612245 + 0.530612245 + x = -5.521379446 + 0.530612245 Combine like terms: -0.530612245 + 0.530612245 = 0.000000000 0.000000000 + x = -5.521379446 + 0.530612245 x = -5.521379446 + 0.530612245 Combine like terms: -5.521379446 + 0.530612245 = -4.990767201 x = -4.990767201 Simplifying x = -4.990767201

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.051991691, -4.990767201}

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