P = 2ab + 2ac + 2bc c= ?
wyznacz c
P = 2ab + 2ac + 2bc / - 2ab
P - 2ab = 2ac + 2cb
P - 2ab = c(2a + 2b)/ : (2a + 2b)
P - 2ac = c
(2a +2b)
P = 2ab + 2ac + 2bc c=?
P=2(ab+ac+bc)
1/2P=ab+ac+bc
1/2P-ab=c(a+b)
c=1/2P-ab/a+b
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P = 2ab + 2ac + 2bc / - 2ab
P - 2ab = 2ac + 2cb
P - 2ab = c(2a + 2b)/ : (2a + 2b)
P - 2ac = c
(2a +2b)
P = 2ab + 2ac + 2bc c=?
P=2(ab+ac+bc)
1/2P=ab+ac+bc
1/2P-ab=c(a+b)
c=1/2P-ab/a+b