uprosc wyrazenia
a) (5x-4y)(5x+4y)- jedna czwarta (10x-2y)²
b)4a(9a-3)-(a-2)²+3(a²-6a+2)
a)
25x² - 14 y² - ¼(100x²-40xy+4y²)= 25x²-14y²- 25x²- 10xy+y²= -13y²-10xy
b)
36a²-12a-a²-4a+4+3a²-18a+6=38a²-34a+10
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a)
25x² - 14 y² - ¼(100x²-40xy+4y²)= 25x²-14y²- 25x²- 10xy+y²= -13y²-10xy
b)
36a²-12a-a²-4a+4+3a²-18a+6=38a²-34a+10