Zapisz w postaci sumy algebraicznej
a) (x-2y)do kwadratu - ( x+1) do kwadratu
b) 3(x-5) do kwadratu - (2x-1) do kwadratu
c) (x-3) do kwadratu - 2(x-1) do kwadratu
d) (x+pierwiastek z 2) do kwadratu +2(x-pierwiastek z 2 ) do kwadratu
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a) (x-2y)do kwadratu - ( x+1) do kwadratu
(x-2y)²-(x+1)²=x²-4y+4y²-x²-2x-1=4y²-4y-2x-1
b) 3(x-5) do kwadratu - (2x-1) do kwadratu
3(x+5)²-(2x-1)²=3x²+30x+75-4x²+4x-1=-x²+34x+74
c) (x-3) do kwadratu - 2(x-1) do kwadratu
(x-3)²-2(x-1)²=x²-6x+9-2x²+4x-2=-x²-2x+7
d) (x+pierwiastek z 2) do kwadratu +2(x-pierwiastek z 2 ) do kwadratu
(x+√2)²+2(x-√2)²=x²+2√2x+2+2x²-4√2x+4=3x²-2√2x+6
a) (x-2y)do kwadratu - ( x+1) do kwadratu = x²-2x+2y-x²+2x+1
b) 3(x-5) do kwadratu - (2x-1) do kwadratu = x²-2x²+25-2x²-4x+1-1
c) (x-3) do kwadratu - 2(x-1) do kwadratu = x²-2(x+3) - 2(x²-2x+1-1)=x²-2x+6-x²-4x+2-2
d) (x+pierwiastek z 2) do kwadratu +2(x-pierwiastek z 2 ) do kwadratu = x²+2x+√2+√2² + 2(x²-2x+√2-√2²)=x²+2x+√2+2+2x²-4x+√2-2
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