Wzory skruconego mnożenia :
(4a+5b) (5b-4a) =
"2"oznacza do kwadratu
(4a+5b) (5b-4a)=16a"2"-25b"2"=256a-625b
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"2"oznacza do kwadratu
(4a+5b) (5b-4a)=16a"2"-25b"2"=256a-625b