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a) 8/2-V2 * 2+V2/2+V2 = 8(2+V2)/ 4-2 = 16+8V2 / 2 = 16/2 + 8V2/2 = 8+4V2
b)V3/2-V3 *2+V3/2+V3 = V3(2+V3)/-1 = 2V3 +3/-1 = -2V3-3
zad.2
a)(8a - 4)*(1+ 2a)= 8a+16a^2 -4-8a = 16a^2 -4
b)(7ab +10)*(a^2 - b)=7a^3b -7ab^2 +10a^2 -10b
c) (aV7 - a)*(a +V7)= a^2V7+7a-a^2 - aV7
d)(2t - t^2)*(t^3 - 2t^3)* (t -1) = (2t^4 - 4t^4 - t^5 +2t^5)(t-1) = (t^4+t^5)(t-1) = t^5 - t^4+t^6 - t^5 = t^4 + t^6