(4x+1)(7+5x)=0

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Solution for (4x+1)(7+5x)=0 equation:


Simplifying
(4x + 1)(7 + 5x) = 0

Reorder the terms:
(1 + 4x)(7 + 5x) = 0

Multiply (1 + 4x) * (7 + 5x)
(1(7 + 5x) + 4x * (7 + 5x)) = 0
((7 * 1 + 5x * 1) + 4x * (7 + 5x)) = 0
((7 + 5x) + 4x * (7 + 5x)) = 0
(7 + 5x + (7 * 4x + 5x * 4x)) = 0
(7 + 5x + (28x + 20x2)) = 0

Combine like terms: 5x + 28x = 33x
(7 + 33x + 20x2) = 0

Solving
7 + 33x + 20x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(7 + 5x)(1 + 4x) = 0

Subproblem 1

Set the factor '(7 + 5x)' equal to zero and attempt to solve: Simplifying 7 + 5x = 0 Solving 7 + 5x = 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 + 5x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 5x = 0 + -7 5x = 0 + -7 Combine like terms: 0 + -7 = -7 5x = -7 Divide each side by '5'. x = -1.4 Simplifying x = -1.4

Subproblem 2

Set the factor '(1 + 4x)' equal to zero and attempt to solve: Simplifying 1 + 4x = 0 Solving 1 + 4x = 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 + 4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4x = 0 + -1 4x = 0 + -1 Combine like terms: 0 + -1 = -1 4x = -1 Divide each side by '4'. x = -0.25 Simplifying x = -0.25

Solution

x = {-1.4, -0.25}

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