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

Solution for (1+x)(4x-3)=0 equation:

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

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

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

Combine like terms: 4x + -3x = 1x
(-3 + 1x + 4x2) = 0

Solving
-3 + 1x + 4x2 = 0

Solving for variable 'x'.

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

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 + -4x)' equal to zero and attempt to solve:

Simplifying
3 + -4x = 0

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

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

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

Divide each side by '-4'.
x = 0.75

Simplifying
x = 0.75
Solution
x = {-1, 0.75}