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A ponieważ 1
zad 12
1. 3a + a + a + 2a + 0,5a + a + 3,5a + 4a = 16a * 10 = 160
2. P = 3a * a + 4a * 2a + 3,5a * a = 3a² + 8a² + 3,5a² = 14,5a² = 14,5 * 10² = 14,5 * 100
= 1450
1} 10*(3+1+1+2+0,5+1+3,5+1+1+2)=10*15=150