3x(2x+7)+(2x+7)=

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Solution for 3x(2x+7)+(2x+7)= equation:


Simplifying
3x(2x + 7) + (2x + 7) = 0

Reorder the terms:
3x(7 + 2x) + (2x + 7) = 0
(7 * 3x + 2x * 3x) + (2x + 7) = 0
(21x + 6x2) + (2x + 7) = 0

Reorder the terms:
21x + 6x2 + (7 + 2x) = 0

Remove parenthesis around (7 + 2x)
21x + 6x2 + 7 + 2x = 0

Reorder the terms:
7 + 21x + 2x + 6x2 = 0

Combine like terms: 21x + 2x = 23x
7 + 23x + 6x2 = 0

Solving
7 + 23x + 6x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(7 + 2x)(1 + 3x) = 0

Subproblem 1

Set the factor '(7 + 2x)' equal to zero and attempt to solve: Simplifying 7 + 2x = 0 Solving 7 + 2x = 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 + 2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2x = 0 + -7 2x = 0 + -7 Combine like terms: 0 + -7 = -7 2x = -7 Divide each side by '2'. x = -3.5 Simplifying x = -3.5

Subproblem 2

Set the factor '(1 + 3x)' equal to zero and attempt to solve: Simplifying 1 + 3x = 0 Solving 1 + 3x = 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 + 3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3x = 0 + -1 3x = 0 + -1 Combine like terms: 0 + -1 = -1 3x = -1 Divide each side by '3'. x = -0.3333333333 Simplifying x = -0.3333333333

Solution

x = {-3.5, -0.3333333333}

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