(x+1)(-3x-4)=

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Solution for (x+1)(-3x-4)= equation: 


Simplifying
(x + 1)(-3x + -4) = 0

Reorder the terms:
(1 + x)(-3x + -4) = 0

Reorder the terms:
(1 + x)(-4 + -3x) = 0

Multiply (1 + x) * (-4 + -3x)
(1(-4 + -3x) + x(-4 + -3x)) = 0
((-4 * 1 + -3x * 1) + x(-4 + -3x)) = 0
((-4 + -3x) + x(-4 + -3x)) = 0
(-4 + -3x + (-4 * x + -3x * x)) = 0
(-4 + -3x + (-4x + -3x2)) = 0

Combine like terms: -3x + -4x = -7x
(-4 + -7x + -3x2) = 0

Solving
-4 + -7x + -3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(4 + 7x + 3x2) = 0

Factor a trinomial.
-1((4 + 3x)(1 + x)) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(4 + 3x)' equal to zero and attempt to solve:

Simplifying
4 + 3x = 0

Solving
4 + 3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + 3x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 3x = 0 + -4
3x = 0 + -4

Combine like terms: 0 + -4 = -4
3x = -4

Divide each side by '3'.
x = -1.333333333

Simplifying
x = -1.333333333

Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve:

Simplifying
1 + x = 0

Solving
1 + x = 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 + x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + x = 0 + -1
x = 0 + -1

Combine like terms: 0 + -1 = -1
x = -1

Simplifying
x = -1
Solution
x = {-1.333333333, -1}

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