(-2a² + 2ab - 1) + (a² - 4ab + 5) dla a = ¼ i b = 2 Zadanie na jutro :(

-2a²+2ab-1+a²-4ab+5=-a²-2ab+4 -(1/4)²-2*1/4*2+4=-1/16-4/4+4=-1 ¹/₁₆+4=2 ¹⁵/₁₆

(-2*1/16) + ( 1/16-4*1/4*2+5)=-2/16+1/16-2+5=3/16+3=3 i 3/16