2a^2+12a+40=0

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Solution for 2a^2+12a+40=0 equation:


Simplifying
2a2 + 12a + 40 = 0

Reorder the terms:
40 + 12a + 2a2 = 0

Solving
40 + 12a + 2a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2'.
2(20 + 6a + a2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(20 + 6a + a2)' equal to zero and attempt to solve: Simplifying 20 + 6a + a2 = 0 Solving 20 + 6a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '-20' to each side of the equation. 20 + 6a + -20 + a2 = 0 + -20 Reorder the terms: 20 + -20 + 6a + a2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 6a + a2 = 0 + -20 6a + a2 = 0 + -20 Combine like terms: 0 + -20 = -20 6a + a2 = -20 The a term is 6a. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6a + 9 + a2 = -20 + 9 Reorder the terms: 9 + 6a + a2 = -20 + 9 Combine like terms: -20 + 9 = -11 9 + 6a + a2 = -11 Factor a perfect square on the left side: (a + 3)(a + 3) = -11 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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