(7x+9)(x-1)=0

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Solution for (7x+9)(x-1)=0 equation:


Simplifying
(7x + 9)(x + -1) = 0

Reorder the terms:
(9 + 7x)(x + -1) = 0

Reorder the terms:
(9 + 7x)(-1 + x) = 0

Multiply (9 + 7x) * (-1 + x)
(9(-1 + x) + 7x * (-1 + x)) = 0
((-1 * 9 + x * 9) + 7x * (-1 + x)) = 0
((-9 + 9x) + 7x * (-1 + x)) = 0
(-9 + 9x + (-1 * 7x + x * 7x)) = 0
(-9 + 9x + (-7x + 7x2)) = 0

Combine like terms: 9x + -7x = 2x
(-9 + 2x + 7x2) = 0

Solving
-9 + 2x + 7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -7x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -7x)' equal to zero and attempt to solve: Simplifying -9 + -7x = 0 Solving -9 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -7x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -7x = 0 + 9 -7x = 0 + 9 Combine like terms: 0 + 9 = 9 -7x = 9 Divide each side by '-7'. x = -1.285714286 Simplifying x = -1.285714286

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 = {-1.285714286, 1}

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