(a+7)(a+4)=

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Solution for (a+7)(a+4)= equation:


Simplifying
(a + 7)(a + 4) = 0

Reorder the terms:
(7 + a)(a + 4) = 0

Reorder the terms:
(7 + a)(4 + a) = 0

Multiply (7 + a) * (4 + a)
(7(4 + a) + a(4 + a)) = 0
((4 * 7 + a * 7) + a(4 + a)) = 0
((28 + 7a) + a(4 + a)) = 0
(28 + 7a + (4 * a + a * a)) = 0
(28 + 7a + (4a + a2)) = 0

Combine like terms: 7a + 4a = 11a
(28 + 11a + a2) = 0

Solving
28 + 11a + a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(7 + a)(4 + a) = 0

Subproblem 1

Set the factor '(7 + a)' equal to zero and attempt to solve: Simplifying 7 + a = 0 Solving 7 + a = 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 + a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + a = 0 + -7 a = 0 + -7 Combine like terms: 0 + -7 = -7 a = -7 Simplifying a = -7

Subproblem 2

Set the factor '(4 + a)' equal to zero and attempt to solve: Simplifying 4 + a = 0 Solving 4 + a = 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 + a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + a = 0 + -4 a = 0 + -4 Combine like terms: 0 + -4 = -4 a = -4 Simplifying a = -4

Solution

a = {-7, -4}

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