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

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


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

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

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

Multiply (-7 + 4x) * (1 + 7x)
(-7(1 + 7x) + 4x * (1 + 7x)) = 0
((1 * -7 + 7x * -7) + 4x * (1 + 7x)) = 0
((-7 + -49x) + 4x * (1 + 7x)) = 0
(-7 + -49x + (1 * 4x + 7x * 4x)) = 0
(-7 + -49x + (4x + 28x2)) = 0

Combine like terms: -49x + 4x = -45x
(-7 + -45x + 28x2) = 0

Solving
-7 + -45x + 28x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-1 + -7x)' equal to zero and attempt to solve: Simplifying -1 + -7x = 0 Solving -1 + -7x = 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 + -7x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -7x = 0 + 1 -7x = 0 + 1 Combine like terms: 0 + 1 = 1 -7x = 1 Divide each side by '-7'. x = -0.1428571429 Simplifying x = -0.1428571429

Subproblem 2

Set the factor '(7 + -4x)' equal to zero and attempt to solve: Simplifying 7 + -4x = 0 Solving 7 + -4x = 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 + -4x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4x = 0 + -7 -4x = 0 + -7 Combine like terms: 0 + -7 = -7 -4x = -7 Divide each side by '-4'. x = 1.75 Simplifying x = 1.75

Solution

x = {-0.1428571429, 1.75}

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