Răspunsuri

2014-02-09T15:10:33+02:00
A=5,76:2,4-0,144:1,2
b=3,24:1,8-0,3
a=2,4-0,12=2,28
a=2,28
b=1,8-0.3=1,5
b=1,5
(a-b) la puterea a doua=a patrat -2ab+b patrat rezulta  2,28 partrat-2•(2,28•1,5)+1,5 patrat rezulta 5,1984-2•3,42+3=5,1984-6,84+3=1,6416+3=1,3584
(a+b) la puterea a doua=a patrat + 2ab+b patrat rezulta 2,28 patrat+2(2,28•1,5) +1,5 patrat rezulta 5,1984 +2•3,42+3=5,1984+6,84+3=12,0384+3=15,0384
a patrat-b patrat=2,28 patrat+1,5 patrat=5,1984-3=2,1984
1 5 1
2014-02-09T15:18:49+02:00
A =5 , 38 , 4 , 144 si 2 .
b = 3 , 24 , 8 si 1 .
Atunci (a+b) la puterea 2 =  (5+38+4+144+2+3+24+8+1) la puterea 2 =229 la puterea 2 =52.441 
(a-b) la puterea 2 = (5+38+4+144+2)-(3+24+8+1) =193-36=157 la puterea 2 = 24.649
a la puterea 2 +b la puterea 2 = 193 la puterea 2 =37.249+36 la puterea 2 =1.296 =37.249+1.296=38.545 
Sper ca ti-am fost de ajutor :*