(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 + -1a)(9 + -1a) = 0

Subproblem 1

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 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 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Subproblem 2

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 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 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Solution

a = {9, 9}

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