Question

care ma poare ajuta doar cu ex 14.

Answer 1

(5/4-2/3+1/2)(5/4-1/2-2/3) = aducem la acelasi numitor comun, care este 12 
(15/12-8/12+6/12)(15/12-6/12-8/12) =
13/12 * 1/12=13/144

(5/4-2/3)^2-(1/2)^2 =(15/12-8/12)^2-1/4=(7/12)^2-1/4=49/144-36/144=13/144

sunt egale

Answer 2

A) 5/4-2/3+1/2=15/12-8/12+6/12=13/12=1 1\12 .

B)5/4-2/3=15/12-8/12=7/12= 49/144.

49/144-1/4=49/144-36/144=13/144=169/20736