(a-5)(a-7)=

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Solution for (a-5)(a-7)= equation:


Simplifying
(a + -5)(a + -7) = 0

Reorder the terms:
(-5 + a)(a + -7) = 0

Reorder the terms:
(-5 + a)(-7 + a) = 0

Multiply (-5 + a) * (-7 + a)
(-5(-7 + a) + a(-7 + a)) = 0
((-7 * -5 + a * -5) + a(-7 + a)) = 0
((35 + -5a) + a(-7 + a)) = 0
(35 + -5a + (-7 * a + a * a)) = 0
(35 + -5a + (-7a + a2)) = 0

Combine like terms: -5a + -7a = -12a
(35 + -12a + a2) = 0

Solving
35 + -12a + a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(5 + -1a)(7 + -1a) = 0

Subproblem 1

Set the factor '(5 + -1a)' equal to zero and attempt to solve: Simplifying 5 + -1a = 0 Solving 5 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1a = 0 + -5 -1a = 0 + -5 Combine like terms: 0 + -5 = -5 -1a = -5 Divide each side by '-1'. a = 5 Simplifying a = 5

Subproblem 2

Set the factor '(7 + -1a)' equal to zero and attempt to solve: Simplifying 7 + -1a = 0 Solving 7 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1a = 0 + -7 -1a = 0 + -7 Combine like terms: 0 + -7 = -7 -1a = -7 Divide each side by '-1'. a = 7 Simplifying a = 7

Solution

a = {5, 7}

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