-2a(a-3)=14

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Solution for -2a(a-3)=14 equation:


Simplifying
-2a(a + -3) = 14

Reorder the terms:
-2a(-3 + a) = 14
(-3 * -2a + a * -2a) = 14
(6a + -2a2) = 14

Solving
6a + -2a2 = 14

Solving for variable 'a'.

Reorder the terms:
-14 + 6a + -2a2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + 6a + -2a2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-7 + 3a + -1a2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-7 + 3a + -1a2)' equal to zero and attempt to solve: Simplifying -7 + 3a + -1a2 = 0 Solving -7 + 3a + -1a2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 7 + -3a + a2 = 0 Move the constant term to the right: Add '-7' to each side of the equation. 7 + -3a + -7 + a2 = 0 + -7 Reorder the terms: 7 + -7 + -3a + a2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3a + a2 = 0 + -7 -3a + a2 = 0 + -7 Combine like terms: 0 + -7 = -7 -3a + a2 = -7 The a term is -3a. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3a + 2.25 + a2 = -7 + 2.25 Reorder the terms: 2.25 + -3a + a2 = -7 + 2.25 Combine like terms: -7 + 2.25 = -4.75 2.25 + -3a + a2 = -4.75 Factor a perfect square on the left side: (a + -1.5)(a + -1.5) = -4.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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