Page 68 - Bangladesh_classwiz_BOOK2018_rev_Neat

QR ‡KvW ‡_‡K cÖvß mnmgxKi‡Yi ‡jLwPÎ wb‡P ‡`Lv‡bv n‡jv-

G‡¶‡Î `ywU mgxKiYB g~jZ GKB| j¶Yxq ‡h, wØZxq mgxKiYwU g~jZ cÖ_g mgxKi‡Yi wظY| hvi d‡j ‡h‡Kv‡bv
GK ‡Rvov gvb hv cÖ_g mgxKiY‡K wm× K‡i, wØZxq mgxKiY‡KI Zv wm× Ki‡e| D`vniY¯^iƒc = −2 I =
1 mgxKiYØq‡K wm× Ki‡e Avevi = 5 I = 2 Ges = 4 I = −1 Ges G ai‡bi AviI AmsL¨

mgvavb i‡q‡Q| cÖ_g mgxKi‡Yi g‡Zv + 3 Gi gvb hw` 1 nq Zvn‡j 2( + 3 ) = 2 + 6 Gi gvb
Aek¨B 2 × 1 = 2 n‡e hv wØZxq mgxKi‡Y ‡`Lv hv‡”Q| G ai‡bi mgxKi‡Yi AmsL¨ mgvavb _v‡K| Dc‡ii
‡jLwPÎ n‡Z aviYvwU cwi®‹vi nq| ‡jLwPÎ n‡Z ‡`Lv hv‡”Q ‡h `yBwU mgxKiY GKB mij‡iLv wb‡`©k Ki‡Q| A_©vr
mij‡iLv `yBwU G‡K Ac‡ii Dci DcwicvwZZ n‡q‡Q| myZivs G‡`i ‡Q`we›`yi cwigvY AmsL¨ nIqvq AmsL¨
mgvavb _vK‡e|

AviI wKQ mgxKiY i‡q‡Q hv‡`i ‡Kv‡bv mgvavb cvIqv hvq bv| GLv‡b GKwU D`vniY ‡`qv n‡jv-
y
+ 3 = 1

2 + 6 = 7

K¨vjKy‡jU‡ii gva¨‡g mgvavb Ki‡Z ‡M‡j ‡`Lv hv‡e ‡h G‡`i ‡Kv‡bv mgvavb ‡bB|

QR ‡KvW ‡_‡K cÖvß mnmgxKi‡Yi ‡jLwPÎ wb‡P ‡`Lv‡bv n‡jv-

GB ‡¶‡Î `ywU mgxKiY Abyiƒc bq, wKš‘ fvj K‡i ch©‡e¶Y Ki‡j ‡`Lv hv‡e ‡h, g~j mgm¨vwU n‡jv hw` +

3 = 1 nq Zvn‡j 2( + 3 ) = 2 + 6 Gi gvb Aek¨B 2 × 1 = 2 n‡Z n‡e| wKš‘ Avgv‡`i

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