(5x+1)(x+7)=0

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Solution for (5x+1)(x+7)=0 equation:


Simplifying
(5x + 1)(x + 7) = 0

Reorder the terms:
(1 + 5x)(x + 7) = 0

Reorder the terms:
(1 + 5x)(7 + x) = 0

Multiply (1 + 5x) * (7 + x)
(1(7 + x) + 5x * (7 + x)) = 0
((7 * 1 + x * 1) + 5x * (7 + x)) = 0
((7 + 1x) + 5x * (7 + x)) = 0
(7 + 1x + (7 * 5x + x * 5x)) = 0
(7 + 1x + (35x + 5x2)) = 0

Combine like terms: 1x + 35x = 36x
(7 + 36x + 5x2) = 0

Solving
7 + 36x + 5x2 = 0

Solving for variable 'x'.

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

Subproblem 1

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

Subproblem 2

Set the factor '(1 + 5x)' equal to zero and attempt to solve: Simplifying 1 + 5x = 0 Solving 1 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 5x = 0 + -1 5x = 0 + -1 Combine like terms: 0 + -1 = -1 5x = -1 Divide each side by '5'. x = -0.2 Simplifying x = -0.2

Solution

x = {-7, -0.2}

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