przedstaw podane wyrazenia w postaci sum algebraicznych.
(x+7)do 2
(2x-1)do 2
(4a-2) x (4a+2)
3(2a+1)x(2a-1)
(x+7) do 2 = x do 2 + 14x + 49
(2x -1) do 2 = 4x do 2 - 4x + 1
(4a -2 ) x (4a +2) = 16a do 2 + 8a - 8a -4 = 16a do 2 - 4
3(2a +1)x(2a-1) = (6a + 3) x (2a -1) = 12a do 2 - 6a + 6a - 3 = 12a do 2 -3
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(x+7) do 2 = x do 2 + 14x + 49
(2x -1) do 2 = 4x do 2 - 4x + 1
(4a -2 ) x (4a +2) = 16a do 2 + 8a - 8a -4 = 16a do 2 - 4
3(2a +1)x(2a-1) = (6a + 3) x (2a -1) = 12a do 2 - 6a + 6a - 3 = 12a do 2 -3
Wszystko to wzory skróconego mnożenia!