Ռաֆայել Գրիգորյան «Մխիթար Սեբաստացի» կրթահամալիր 

Hello mom, how are you? I have started going to volleyball.
I love that work very much.
I want to continue.
And I congratulate you on March 8.
Be good.
Your dear Rafayel

Լրացուցիչ առաջադրանքներ 904: 905-բ,դ; 906-ա,գ

ա) 3
բ) 1 3/4
գ) -10 1/2
դ) 0
ե) 6/7
զ) -8/19

905.Գտե՛ք արտահայտության արժեքը.

բ)|b| – |a| = |1/2| — | -1 1/2| = 1/2 + 1 1/2 = 1/2 + 3/2 = (2:2)x1 + (2:2)x3/2 = 1+3/2 = 4/2 = 2

դ) |b| ։ |a| = |0| ։ |-2 1/2 | = 0 : -2 1/2 = 0 : 5/2 = 0

906.

ա) 1 3/11 x (2 1/4 — 3 1/16) = 14/11 x (9/4 — 49/16) = 14/11 x ((16:4)x9 — (16:16)x49/16) = 14/11 x 36 — 49/16 = 14/11 x -13/16 = -13×49/16×11 = — 637/176 = 3 109/176