(x-1)(3x+7)=

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Solution for (x-1)(3x+7)= equation:


Simplifying
(x + -1)(3x + 7) = 0

Reorder the terms:
(-1 + x)(3x + 7) = 0

Reorder the terms:
(-1 + x)(7 + 3x) = 0

Multiply (-1 + x) * (7 + 3x)
(-1(7 + 3x) + x(7 + 3x)) = 0
((7 * -1 + 3x * -1) + x(7 + 3x)) = 0
((-7 + -3x) + x(7 + 3x)) = 0
(-7 + -3x + (7 * x + 3x * x)) = 0
(-7 + -3x + (7x + 3x2)) = 0

Combine like terms: -3x + 7x = 4x
(-7 + 4x + 3x2) = 0

Solving
-7 + 4x + 3x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -3x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 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 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333

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 = {-2.333333333, 1}

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