7a-4*a*a-13a+9*a*a=

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Solution for 7a-4*a*a-13a+9*a*a= equation:


Simplifying
7a + -4a * a + -13a + 9a * a = 0

Multiply a * a
7a + -4a2 + -13a + 9a * a = 0

Multiply a * a
7a + -4a2 + -13a + 9a2 = 0

Reorder the terms:
7a + -13a + -4a2 + 9a2 = 0

Combine like terms: 7a + -13a = -6a
-6a + -4a2 + 9a2 = 0

Combine like terms: -4a2 + 9a2 = 5a2
-6a + 5a2 = 0

Solving
-6a + 5a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), 'a'.
a(-6 + 5a) = 0

Subproblem 1

Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0

Subproblem 2

Set the factor '(-6 + 5a)' equal to zero and attempt to solve: Simplifying -6 + 5a = 0 Solving -6 + 5a = 0 Move all terms containing a to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 5a = 0 + 6 Combine like terms: -6 + 6 = 0 0 + 5a = 0 + 6 5a = 0 + 6 Combine like terms: 0 + 6 = 6 5a = 6 Divide each side by '5'. a = 1.2 Simplifying a = 1.2

Solution

a = {0, 1.2}

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