-3x^2+24x=25

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Solution for -3x^2+24x=25 equation:


Simplifying
-3x2 + 24x = 25

Reorder the terms:
24x + -3x2 = 25

Solving
24x + -3x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + 24x + -3x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + 24x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
8.333333333 + -8x + x2 = 0

Move the constant term to the right:

Add '-8.333333333' to each side of the equation.
8.333333333 + -8x + -8.333333333 + x2 = 0 + -8.333333333

Reorder the terms:
8.333333333 + -8.333333333 + -8x + x2 = 0 + -8.333333333

Combine like terms: 8.333333333 + -8.333333333 = 0.000000000
0.000000000 + -8x + x2 = 0 + -8.333333333
-8x + x2 = 0 + -8.333333333

Combine like terms: 0 + -8.333333333 = -8.333333333
-8x + x2 = -8.333333333

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -8.333333333 + 16

Reorder the terms:
16 + -8x + x2 = -8.333333333 + 16

Combine like terms: -8.333333333 + 16 = 7.666666667
16 + -8x + x2 = 7.666666667

Factor a perfect square on the left side:
(x + -4)(x + -4) = 7.666666667

Calculate the square root of the right side: 2.768874621

Break this problem into two subproblems by setting 
(x + -4) equal to 2.768874621 and -2.768874621.

Subproblem 1

x + -4 = 2.768874621 Simplifying x + -4 = 2.768874621 Reorder the terms: -4 + x = 2.768874621 Solving -4 + x = 2.768874621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 2.768874621 + 4 Combine like terms: -4 + 4 = 0 0 + x = 2.768874621 + 4 x = 2.768874621 + 4 Combine like terms: 2.768874621 + 4 = 6.768874621 x = 6.768874621 Simplifying x = 6.768874621

Subproblem 2

x + -4 = -2.768874621 Simplifying x + -4 = -2.768874621 Reorder the terms: -4 + x = -2.768874621 Solving -4 + x = -2.768874621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -2.768874621 + 4 Combine like terms: -4 + 4 = 0 0 + x = -2.768874621 + 4 x = -2.768874621 + 4 Combine like terms: -2.768874621 + 4 = 1.231125379 x = 1.231125379 Simplifying x = 1.231125379

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.768874621, 1.231125379}

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