Penjelasan dengan langkah-langkah:
(4x + b) × (b - 4x)
(4x × b) + (4x × -4x) + (b × b) + (b × -4x)
4xb - 16x + b² - 4xb
4xb - 4xb - 16x + b²
-16x + b²
b² - 16x ====> (a)
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Penjelasan dengan langkah-langkah:
(4x + b) × (b - 4x)
(4x × b) + (4x × -4x) + (b × b) + (b × -4x)
4xb - 16x + b² - 4xb
4xb - 4xb - 16x + b²
-16x + b²
b² - 16x ====> (a)