192 = 2 • 2 • 2 • 2 • 2 • 2 • 3
256 = 2 • 2 • 2 • 2 • 2 • 2 • 2 • 2
НОД (192; 256) = 2 • 2 • 2 • 2 • 2 • 2 = 64
-3 1/2=-7/2
1 5/9=14/9
-4 3/5=-23/5
-2 4/7=-18/7
-6 1/2=-13/2
7 1/3=22/3
(√a+√b)(a-√ab+b)/(√a+√b) -√ab=a-√ab+b -√ab=(√a-√b)²
(√a-√b)² :(a-b)=(√a-√b)²/(√a-√b)(√a+√b)=(√a-√b)/(√a+√b)
(√a-√b)/(√a+√b)+ 2√b/(√a+√b)=(a√-√b+2√b)/(√a+√b)=(√a+√b)/(√a+√b)=1