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(5-y)<do kwadratu>+b<do kwadratu>=16
y<do kwadratu>+b<do kwadratu>=9/*(-1)
25-5y+y<do kwadratu>+b<do kwadratu>=18
b<do kwadratu>=9-y<do kwadratu>
25-5y+y<do kwadratu>+b<do kwadratu>=18
b<do kwadratu>=9-y<do kwadratu>
25-5y+y<do kwadratu>+9-y<do kwadratu>=18
b<do kwadratu>=9-y<do kwadratu>
16-5y=18/-16
b<do kwadratu>=9-y<do kwadratu>
5y=2
b<do kwadratu>=9-y<do kwadratu>
y=0,4
b<do kwadratu>=9-(0,4)<do kwadratu>
y=0,4
b<do kwadratu>=9-0,16
y=0,4
b<do kwadratu>=8,84
b=8,84<pierwiastek>
P=[(a+b)*h]/2
p=[5+10]*8,84<pierwiastek>]/2
P=15*2,21<pierwiastek>
Nie zapewniam że dobrze zrobiłam jak umiałam ;P