7(x-1)(2x+1)=0

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Solution for 7(x-1)(2x+1)=0 equation:


Simplifying
7(x + -1)(2x + 1) = 0

Reorder the terms:
7(-1 + x)(2x + 1) = 0

Reorder the terms:
7(-1 + x)(1 + 2x) = 0

Multiply (-1 + x) * (1 + 2x)
7(-1(1 + 2x) + x(1 + 2x)) = 0
7((1 * -1 + 2x * -1) + x(1 + 2x)) = 0
7((-1 + -2x) + x(1 + 2x)) = 0
7(-1 + -2x + (1 * x + 2x * x)) = 0
7(-1 + -2x + (1x + 2x2)) = 0

Combine like terms: -2x + 1x = -1x
7(-1 + -1x + 2x2) = 0
(-1 * 7 + -1x * 7 + 2x2 * 7) = 0
(-7 + -7x + 14x2) = 0

Solving
-7 + -7x + 14x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-1 + -1x + 2x2) = 0

Factor a trinomial.
7((-1 + -2x)(1 + -1x)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 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 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 2

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

Solution

x = {-0.5, 1}

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