(-a^2-9)(a^2+9)=

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Solution for (-a^2-9)(a^2+9)= equation:


Simplifying
(-1a2 + -9)(a2 + 9) = 0

Reorder the terms:
(-9 + -1a2)(a2 + 9) = 0

Reorder the terms:
(-9 + -1a2)(9 + a2) = 0

Multiply (-9 + -1a2) * (9 + a2)
(-9(9 + a2) + -1a2 * (9 + a2)) = 0
((9 * -9 + a2 * -9) + -1a2 * (9 + a2)) = 0
((-81 + -9a2) + -1a2 * (9 + a2)) = 0
(-81 + -9a2 + (9 * -1a2 + a2 * -1a2)) = 0
(-81 + -9a2 + (-9a2 + -1a4)) = 0

Combine like terms: -9a2 + -9a2 = -18a2
(-81 + -18a2 + -1a4) = 0

Solving
-81 + -18a2 + -1a4 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(81 + 18a2 + a4) = 0

Factor a trinomial.
-1((9 + a2)(9 + a2)) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(9 + a2)' equal to zero and attempt to solve: Simplifying 9 + a2 = 0 Solving 9 + a2 = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + a2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a2 = 0 + -9 a2 = 0 + -9 Combine like terms: 0 + -9 = -9 a2 = -9 Simplifying a2 = -9 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(9 + a2)' equal to zero and attempt to solve: Simplifying 9 + a2 = 0 Solving 9 + a2 = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + a2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a2 = 0 + -9 a2 = 0 + -9 Combine like terms: 0 + -9 = -9 a2 = -9 Simplifying a2 = -9 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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