(x-2)(x+3)+x^2-4=0

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Solution for (x-2)(x+3)+x^2-4=0 equation:


Simplifying
(x + -2)(x + 3) + x2 + -4 = 0

Reorder the terms:
(-2 + x)(x + 3) + x2 + -4 = 0

Reorder the terms:
(-2 + x)(3 + x) + x2 + -4 = 0

Multiply (-2 + x) * (3 + x)
(-2(3 + x) + x(3 + x)) + x2 + -4 = 0
((3 * -2 + x * -2) + x(3 + x)) + x2 + -4 = 0
((-6 + -2x) + x(3 + x)) + x2 + -4 = 0
(-6 + -2x + (3 * x + x * x)) + x2 + -4 = 0
(-6 + -2x + (3x + x2)) + x2 + -4 = 0

Combine like terms: -2x + 3x = 1x
(-6 + 1x + x2) + x2 + -4 = 0

Reorder the terms:
-6 + -4 + 1x + x2 + x2 = 0

Combine like terms: -6 + -4 = -10
-10 + 1x + x2 + x2 = 0

Combine like terms: x2 + x2 = 2x2
-10 + 1x + 2x2 = 0

Solving
-10 + 1x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -2x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-5 + -2x)' equal to zero and attempt to solve: Simplifying -5 + -2x = 0 Solving -5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2x = 0 + 5 -2x = 0 + 5 Combine like terms: 0 + 5 = 5 -2x = 5 Divide each side by '-2'. x = -2.5 Simplifying x = -2.5

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-2.5, 2}

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