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

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Solution for (7x-3)(3x+3)=0 equation:


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

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

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

Multiply (-3 + 7x) * (3 + 3x)
(-3(3 + 3x) + 7x * (3 + 3x)) = 0
((3 * -3 + 3x * -3) + 7x * (3 + 3x)) = 0
((-9 + -9x) + 7x * (3 + 3x)) = 0
(-9 + -9x + (3 * 7x + 3x * 7x)) = 0
(-9 + -9x + (21x + 21x2)) = 0

Combine like terms: -9x + 21x = 12x
(-9 + 12x + 21x2) = 0

Solving
-9 + 12x + 21x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + 4x + 7x2) = 0

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

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286

Solution

x = {-1, 0.4285714286}

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