Wykonaj działania: a) (x+7) do kwadratu b) (0,6x + 5y) do kwadratu
(x+7)²=x²+2*x*7+7²=x²+14x+49
(0,6x+5y)²=(0,6x)²+2*0,6x*5y+(5y)²=0,36x²+6xy+25y²
(x+7)do kwadraty=x kwadrat+14x+49
(0,6x+5y)do kwadrtu=o,36x kwadrat+6xy+25ykwadrat
;)
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Wykonaj działania: a) (x+7) do kwadratu b) (0,6x + 5y) do kwadratu
(x+7)²=x²+2*x*7+7²=x²+14x+49
(0,6x+5y)²=(0,6x)²+2*0,6x*5y+(5y)²=0,36x²+6xy+25y²
(x+7)do kwadraty=x kwadrat+14x+49
(0,6x+5y)do kwadrtu=o,36x kwadrat+6xy+25ykwadrat
;)