algebra · worked example

Solve x² + 4x + 4 = 0 — x = -2 (double root)

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Problem

$x^2 + 4x + 4 = 0$

Step-by-step solution

Kenali sebagai $(a + b)^2 = a^2 + 2ab + b^2$ dengan $a = x$ , $b = 2$ .
Faktorkan: $(x + 2)^2 = 0$ .
Selesaikan: $x = -2$ — akar berulang.

Answer

$x = -2 \quad \text{(double root)}$

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