1. Oblicz wartość liczbową wyrażenia (a2 – 16)(a+2) dla a= -2pierwiastka z 2
(-4√2 - 16)(-2√2 + 2) = 16 - 8√2 + 32√2 - 32√2 = 16 - 8√2
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(-4√2 - 16)(-2√2 + 2) = 16 - 8√2 + 32√2 - 32√2 = 16 - 8√2