(7x-3)(7x+8)=0

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Solution for (7x-3)(7x+8)=0 equation:


Simplifying
(7x + -3)(7x + 8) = 0

Reorder the terms:
(-3 + 7x)(7x + 8) = 0

Reorder the terms:
(-3 + 7x)(8 + 7x) = 0

Multiply (-3 + 7x) * (8 + 7x)
(-3(8 + 7x) + 7x * (8 + 7x)) = 0
((8 * -3 + 7x * -3) + 7x * (8 + 7x)) = 0
((-24 + -21x) + 7x * (8 + 7x)) = 0
(-24 + -21x + (8 * 7x + 7x * 7x)) = 0
(-24 + -21x + (56x + 49x2)) = 0

Combine like terms: -21x + 56x = 35x
(-24 + 35x + 49x2) = 0

Solving
-24 + 35x + 49x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-8 + -7x)(3 + -7x) = 0

Subproblem 1

Set the factor '(-8 + -7x)' equal to zero and attempt to solve: Simplifying -8 + -7x = 0 Solving -8 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -7x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -7x = 0 + 8 -7x = 0 + 8 Combine like terms: 0 + 8 = 8 -7x = 8 Divide each side by '-7'. x = -1.142857143 Simplifying x = -1.142857143

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 = {-1.142857143, 0.4285714286}

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