(a+9)(a+9)=

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Solution for (a+9)(a+9)= equation:


Simplifying
(a + 9)(a + 9) = 0

Reorder the terms:
(9 + a)(a + 9) = 0

Reorder the terms:
(9 + a)(9 + a) = 0

Multiply (9 + a) * (9 + a)
(9(9 + a) + a(9 + a)) = 0
((9 * 9 + a * 9) + a(9 + a)) = 0
((81 + 9a) + a(9 + a)) = 0
(81 + 9a + (9 * a + a * a)) = 0
(81 + 9a + (9a + a2)) = 0

Combine like terms: 9a + 9a = 18a
(81 + 18a + a2) = 0

Solving
81 + 18a + a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(9 + a)(9 + a) = 0

Subproblem 1

Set the factor '(9 + a)' equal to zero and attempt to solve: Simplifying 9 + a = 0 Solving 9 + a = 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 + a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a = 0 + -9 a = 0 + -9 Combine like terms: 0 + -9 = -9 a = -9 Simplifying a = -9

Subproblem 2

Set the factor '(9 + a)' equal to zero and attempt to solve: Simplifying 9 + a = 0 Solving 9 + a = 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 + a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a = 0 + -9 a = 0 + -9 Combine like terms: 0 + -9 = -9 a = -9 Simplifying a = -9

Solution

a = {-9, -9}

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