zadanie 5 strona 218 matematyka klasa 6

a)
Pb = 4pm
P = 4pm + 2m² = 2m(2p + m)
b)
Pb = ah + bh + ch = h(a + b + c)
P = h(a + b + c) + 2 * ¹/₂ab = h(a + b + c) + ab
c)
Pb = 2ch + 2dh = 2h(c + d)
P = 2h(c + d) + 2cd
(-_-(-_-)-_-)