(5a+3)(a-4)=0

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Solution for (5a+3)(a-4)=0 equation:


Simplifying
(5a + 3)(a + -4) = 0

Reorder the terms:
(3 + 5a)(a + -4) = 0

Reorder the terms:
(3 + 5a)(-4 + a) = 0

Multiply (3 + 5a) * (-4 + a)
(3(-4 + a) + 5a * (-4 + a)) = 0
((-4 * 3 + a * 3) + 5a * (-4 + a)) = 0
((-12 + 3a) + 5a * (-4 + a)) = 0
(-12 + 3a + (-4 * 5a + a * 5a)) = 0
(-12 + 3a + (-20a + 5a2)) = 0

Combine like terms: 3a + -20a = -17a
(-12 + -17a + 5a2) = 0

Solving
-12 + -17a + 5a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-3 + -5a)(4 + -1a) = 0

Subproblem 1

Set the factor '(-3 + -5a)' equal to zero and attempt to solve: Simplifying -3 + -5a = 0 Solving -3 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -5a = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -5a = 0 + 3 -5a = 0 + 3 Combine like terms: 0 + 3 = 3 -5a = 3 Divide each side by '-5'. a = -0.6 Simplifying a = -0.6

Subproblem 2

Set the factor '(4 + -1a)' equal to zero and attempt to solve: Simplifying 4 + -1a = 0 Solving 4 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1a = 0 + -4 -1a = 0 + -4 Combine like terms: 0 + -4 = -4 -1a = -4 Divide each side by '-1'. a = 4 Simplifying a = 4

Solution

a = {-0.6, 4}

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