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

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


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

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

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

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

Combine like terms: -3x + 56x = 53x
0 = (-21 + 53x + 8x2)

Solving
0 = -21 + 53x + 8x2

Solving for variable 'x'.

Combine like terms: 0 + 21 = 21
21 + -53x + -8x2 = -21 + 53x + 8x2 + 21 + -53x + -8x2

Reorder the terms:
21 + -53x + -8x2 = -21 + 21 + 53x + -53x + 8x2 + -8x2

Combine like terms: -21 + 21 = 0
21 + -53x + -8x2 = 0 + 53x + -53x + 8x2 + -8x2
21 + -53x + -8x2 = 53x + -53x + 8x2 + -8x2

Combine like terms: 53x + -53x = 0
21 + -53x + -8x2 = 0 + 8x2 + -8x2
21 + -53x + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
21 + -53x + -8x2 = 0

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

Subproblem 1

Set the factor '(3 + -8x)' equal to zero and attempt to solve: Simplifying 3 + -8x = 0 Solving 3 + -8x = 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 + -8x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -8x = 0 + -3 -8x = 0 + -3 Combine like terms: 0 + -3 = -3 -8x = -3 Divide each side by '-8'. x = 0.375 Simplifying x = 0.375

Subproblem 2

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Solution

x = {0.375, -7}

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