(2a+7)(a+5)=

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Solution for (2a+7)(a+5)= equation:


Simplifying
(2a + 7)(a + 5) = 0

Reorder the terms:
(7 + 2a)(a + 5) = 0

Reorder the terms:
(7 + 2a)(5 + a) = 0

Multiply (7 + 2a) * (5 + a)
(7(5 + a) + 2a * (5 + a)) = 0
((5 * 7 + a * 7) + 2a * (5 + a)) = 0
((35 + 7a) + 2a * (5 + a)) = 0
(35 + 7a + (5 * 2a + a * 2a)) = 0
(35 + 7a + (10a + 2a2)) = 0

Combine like terms: 7a + 10a = 17a
(35 + 17a + 2a2) = 0

Solving
35 + 17a + 2a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(5 + a)(7 + 2a) = 0

Subproblem 1

Set the factor '(5 + a)' equal to zero and attempt to solve: Simplifying 5 + a = 0 Solving 5 + a = 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 + a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + a = 0 + -5 a = 0 + -5 Combine like terms: 0 + -5 = -5 a = -5 Simplifying a = -5

Subproblem 2

Set the factor '(7 + 2a)' equal to zero and attempt to solve: Simplifying 7 + 2a = 0 Solving 7 + 2a = 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 + 2a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2a = 0 + -7 2a = 0 + -7 Combine like terms: 0 + -7 = -7 2a = -7 Divide each side by '2'. a = -3.5 Simplifying a = -3.5

Solution

a = {-5, -3.5}

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