3x*4x(5)+7x-9x=100

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Solution for 3x*4x(5)+7x-9x=100 equation:


Simplifying
3x * 4x(5) + 7x + -9x = 100

Reorder the terms for easier multiplication:
3 * 4 * 5x * x + 7x + -9x = 100

Multiply 3 * 4
12 * 5x * x + 7x + -9x = 100

Multiply 12 * 5
60x * x + 7x + -9x = 100

Multiply x * x
60x2 + 7x + -9x = 100

Reorder the terms:
7x + -9x + 60x2 = 100

Combine like terms: 7x + -9x = -2x
-2x + 60x2 = 100

Solving
-2x + 60x2 = 100

Solving for variable 'x'.

Reorder the terms:
-100 + -2x + 60x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-100 + -2x + 60x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-50 + -1x + 30x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-50 + -1x + 30x2)' equal to zero and attempt to solve: Simplifying -50 + -1x + 30x2 = 0 Solving -50 + -1x + 30x2 = 0 Begin completing the square. Divide all terms by 30 the coefficient of the squared term: Divide each side by '30'. -1.666666667 + -0.03333333333x + x2 = 0.0 Move the constant term to the right: Add '1.666666667' to each side of the equation. -1.666666667 + -0.03333333333x + 1.666666667 + x2 = 0.0 + 1.666666667 Reorder the terms: -1.666666667 + 1.666666667 + -0.03333333333x + x2 = 0.0 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + -0.03333333333x + x2 = 0.0 + 1.666666667 -0.03333333333x + x2 = 0.0 + 1.666666667 Combine like terms: 0.0 + 1.666666667 = 1.666666667 -0.03333333333x + x2 = 1.666666667 The x term is -0.03333333333x. Take half its coefficient (-0.01666666667). Square it (0.0002777777779) and add it to both sides. Add '0.0002777777779' to each side of the equation. -0.03333333333x + 0.0002777777779 + x2 = 1.666666667 + 0.0002777777779 Reorder the terms: 0.0002777777779 + -0.03333333333x + x2 = 1.666666667 + 0.0002777777779 Combine like terms: 1.666666667 + 0.0002777777779 = 1.6669444447779 0.0002777777779 + -0.03333333333x + x2 = 1.6669444447779 Factor a perfect square on the left side: (x + -0.01666666667)(x + -0.01666666667) = 1.6669444447779 Calculate the square root of the right side: 1.291102027 Break this problem into two subproblems by setting (x + -0.01666666667) equal to 1.291102027 and -1.291102027.

Subproblem 1

x + -0.01666666667 = 1.291102027 Simplifying x + -0.01666666667 = 1.291102027 Reorder the terms: -0.01666666667 + x = 1.291102027 Solving -0.01666666667 + x = 1.291102027 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01666666667' to each side of the equation. -0.01666666667 + 0.01666666667 + x = 1.291102027 + 0.01666666667 Combine like terms: -0.01666666667 + 0.01666666667 = 0.00000000000 0.00000000000 + x = 1.291102027 + 0.01666666667 x = 1.291102027 + 0.01666666667 Combine like terms: 1.291102027 + 0.01666666667 = 1.30776869367 x = 1.30776869367 Simplifying x = 1.30776869367

Subproblem 2

x + -0.01666666667 = -1.291102027 Simplifying x + -0.01666666667 = -1.291102027 Reorder the terms: -0.01666666667 + x = -1.291102027 Solving -0.01666666667 + x = -1.291102027 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01666666667' to each side of the equation. -0.01666666667 + 0.01666666667 + x = -1.291102027 + 0.01666666667 Combine like terms: -0.01666666667 + 0.01666666667 = 0.00000000000 0.00000000000 + x = -1.291102027 + 0.01666666667 x = -1.291102027 + 0.01666666667 Combine like terms: -1.291102027 + 0.01666666667 = -1.27443536033 x = -1.27443536033 Simplifying x = -1.27443536033

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.30776869367, -1.27443536033}

Solution

x = {1.30776869367, -1.27443536033}

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