-4x^2+48x=20

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Solution for -4x^2+48x=20 equation:


Simplifying
-4x2 + 48x = 20

Reorder the terms:
48x + -4x2 = 20

Solving
48x + -4x2 = 20

Solving for variable 'x'.

Reorder the terms:
-20 + 48x + -4x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-20 + 48x + -4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-5 + 12x + -1x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-5 + 12x + -1x2)' equal to zero and attempt to solve: Simplifying -5 + 12x + -1x2 = 0 Solving -5 + 12x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 5 + -12x + x2 = 0 Move the constant term to the right: Add '-5' to each side of the equation. 5 + -12x + -5 + x2 = 0 + -5 Reorder the terms: 5 + -5 + -12x + x2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -12x + x2 = 0 + -5 -12x + x2 = 0 + -5 Combine like terms: 0 + -5 = -5 -12x + x2 = -5 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = -5 + 36 Reorder the terms: 36 + -12x + x2 = -5 + 36 Combine like terms: -5 + 36 = 31 36 + -12x + x2 = 31 Factor a perfect square on the left side: (x + -6)(x + -6) = 31 Calculate the square root of the right side: 5.567764363 Break this problem into two subproblems by setting (x + -6) equal to 5.567764363 and -5.567764363.

Subproblem 1

x + -6 = 5.567764363 Simplifying x + -6 = 5.567764363 Reorder the terms: -6 + x = 5.567764363 Solving -6 + x = 5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 5.567764363 + 6 Combine like terms: -6 + 6 = 0 0 + x = 5.567764363 + 6 x = 5.567764363 + 6 Combine like terms: 5.567764363 + 6 = 11.567764363 x = 11.567764363 Simplifying x = 11.567764363

Subproblem 2

x + -6 = -5.567764363 Simplifying x + -6 = -5.567764363 Reorder the terms: -6 + x = -5.567764363 Solving -6 + x = -5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -5.567764363 + 6 Combine like terms: -6 + 6 = 0 0 + x = -5.567764363 + 6 x = -5.567764363 + 6 Combine like terms: -5.567764363 + 6 = 0.432235637 x = 0.432235637 Simplifying x = 0.432235637

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.567764363, 0.432235637}

Solution

x = {11.567764363, 0.432235637}

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