(3a-5)(a-7)=

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Solution for (3a-5)(a-7)= equation:


Simplifying
(3a + -5)(a + -7) = 0

Reorder the terms:
(-5 + 3a)(a + -7) = 0

Reorder the terms:
(-5 + 3a)(-7 + a) = 0

Multiply (-5 + 3a) * (-7 + a)
(-5(-7 + a) + 3a * (-7 + a)) = 0
((-7 * -5 + a * -5) + 3a * (-7 + a)) = 0
((35 + -5a) + 3a * (-7 + a)) = 0
(35 + -5a + (-7 * 3a + a * 3a)) = 0
(35 + -5a + (-21a + 3a2)) = 0

Combine like terms: -5a + -21a = -26a
(35 + -26a + 3a2) = 0

Solving
35 + -26a + 3a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(5 + -3a)(7 + -1a) = 0

Subproblem 1

Set the factor '(5 + -3a)' equal to zero and attempt to solve: Simplifying 5 + -3a = 0 Solving 5 + -3a = 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 + -3a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3a = 0 + -5 -3a = 0 + -5 Combine like terms: 0 + -5 = -5 -3a = -5 Divide each side by '-3'. a = 1.666666667 Simplifying a = 1.666666667

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 = {1.666666667, 7}

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