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√8-√32+√128 = 2√2 - 4√2 + 8√2 = 6√2
Zad2 Doprowadź wyrażenie do najprostszej postaci:
(x-4y)(x+4y)+(x-2)²
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x² - 16y² + x² - 4x + 4
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2x² - 16y² - 4x + 4