1. mnozenie czyli chyba iloczyn
2 suma
3. 1/2a + b = 3 + 4 = 7
4. 20-m
5. Pole = a*b 1 i 1/4 * 4 = 5/4 * 4 = 20/4 = 5
obwod = a*2 + b*2 5/4 * 2 + 4 * 2 = 2.5 + 8 = 10.5
6. 5y² - 3 - 2y² + 5 = 3y² + 2 y = 3.5
3 * (3.5 * 3.5) + 5 = 3 * 12.25 + 5 = 36.75 + 5 = 41.75
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1. mnozenie czyli chyba iloczyn
2 suma
3. 1/2a + b = 3 + 4 = 7
4. 20-m
5. Pole = a*b 1 i 1/4 * 4 = 5/4 * 4 = 20/4 = 5
obwod = a*2 + b*2 5/4 * 2 + 4 * 2 = 2.5 + 8 = 10.5
6. 5y² - 3 - 2y² + 5 = 3y² + 2 y = 3.5
3 * (3.5 * 3.5) + 5 = 3 * 12.25 + 5 = 36.75 + 5 = 41.75