6a*5a+2a-9=

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Solution for 6a*5a+2a-9= equation:


Simplifying
6a * 5a + 2a + -9 = 0

Reorder the terms for easier multiplication:
6 * 5a * a + 2a + -9 = 0

Multiply 6 * 5
30a * a + 2a + -9 = 0

Multiply a * a
30a2 + 2a + -9 = 0

Reorder the terms:
-9 + 2a + 30a2 = 0

Solving
-9 + 2a + 30a2 = 0

Solving for variable 'a'.

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

Divide each side by '30'.
-0.3 + 0.06666666667a + a2 = 0.0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + 0.06666666667a + 0.3 + a2 = 0.0 + 0.3

Reorder the terms:
-0.3 + 0.3 + 0.06666666667a + a2 = 0.0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + 0.06666666667a + a2 = 0.0 + 0.3
0.06666666667a + a2 = 0.0 + 0.3

Combine like terms: 0.0 + 0.3 = 0.3
0.06666666667a + a2 = 0.3

The a term is 0.06666666667a.  Take half its coefficient (0.03333333334).
Square it (0.001111111112) and add it to both sides.

Add '0.001111111112' to each side of the equation.
0.06666666667a + 0.001111111112 + a2 = 0.3 + 0.001111111112

Reorder the terms:
0.001111111112 + 0.06666666667a + a2 = 0.3 + 0.001111111112

Combine like terms: 0.3 + 0.001111111112 = 0.301111111112
0.001111111112 + 0.06666666667a + a2 = 0.301111111112

Factor a perfect square on the left side:
(a + 0.03333333334)(a + 0.03333333334) = 0.301111111112

Calculate the square root of the right side: 0.548735921

Break this problem into two subproblems by setting 
(a + 0.03333333334) equal to 0.548735921 and -0.548735921.

Subproblem 1

a + 0.03333333334 = 0.548735921 Simplifying a + 0.03333333334 = 0.548735921 Reorder the terms: 0.03333333334 + a = 0.548735921 Solving 0.03333333334 + a = 0.548735921 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.03333333334' to each side of the equation. 0.03333333334 + -0.03333333334 + a = 0.548735921 + -0.03333333334 Combine like terms: 0.03333333334 + -0.03333333334 = 0.00000000000 0.00000000000 + a = 0.548735921 + -0.03333333334 a = 0.548735921 + -0.03333333334 Combine like terms: 0.548735921 + -0.03333333334 = 0.51540258766 a = 0.51540258766 Simplifying a = 0.51540258766

Subproblem 2

a + 0.03333333334 = -0.548735921 Simplifying a + 0.03333333334 = -0.548735921 Reorder the terms: 0.03333333334 + a = -0.548735921 Solving 0.03333333334 + a = -0.548735921 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.03333333334' to each side of the equation. 0.03333333334 + -0.03333333334 + a = -0.548735921 + -0.03333333334 Combine like terms: 0.03333333334 + -0.03333333334 = 0.00000000000 0.00000000000 + a = -0.548735921 + -0.03333333334 a = -0.548735921 + -0.03333333334 Combine like terms: -0.548735921 + -0.03333333334 = -0.58206925434 a = -0.58206925434 Simplifying a = -0.58206925434

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.51540258766, -0.58206925434}

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