6. Wartość wyrażenia (8 - √8)(4 + √2) wynosi... ?
8. Oblicz. 2√2 (3√2 + √8)
6) (8 - √8)(4 + √2)=32+8√2-4√8-4=32+ 8√2-4√2*4-4=32+8√2-8√2-4=32-4=28
8) 2√2 (3√2 + √8)=12+2√16=12+8=20
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6) (8 - √8)(4 + √2)=32+8√2-4√8-4=32+ 8√2-4√2*4-4=32+8√2-8√2-4=32-4=28
8) 2√2 (3√2 + √8)=12+2√16=12+8=20