Page 86 - Bangladesh_classwiz_BOOK2018_rev_Neat

3.2 −4.2 −2
2| Gi gvb ‡ei Ki‡Z n‡e |

2 −2 −1
mgvavb- GLv‡b n‡ii ‡Kv‡bv gvb Rvbv ‡bB | ‡K Øviv cÖwZ¯’vwcZ K‡i, Gi GKwU gvb a‡i wb‡Z n‡e | Gici

3.2 −4.2 −2
gvbwU G msi¶Y Ki‡Z n‡e | ivwkwUi Abyiƒc ivwk K¨vjKy‡jU‡i cÖ‡ek Kwi‡q = evUb Pvc‡j

2 −2 −1
ivwkwUi gvb ‡ei n‡q Avm‡e |

(keylog- a3O2^[$p4O2^[p2$$2^[$p2
^[p1==)

1 3
3| (12)2 × √54 Gi gvb ‡ei Ki‡Z n‡e |

mgvavb- K¨vjKy‡jU‡i ^ I qs e¨envi K‡i ivwkwU K¨vjKy‡jU‡i cÖ‡ek Kwi‡q = evUb Pvc‡j djvdj
‡ei n‡q Avm‡e |

(Key log- (12)^pa1R2$$Oqs54=)

4| 2 2 +1 = 128 mgxKiYwU n‡Z Gi gvb ‡ei Ki‡Z n‡e |

mgvavb- cÖ_‡g K¨vjKy‡jUiwU‡K Calculation Mode-G Avb‡Z n‡e | Gici Qr (=) e¨envi K‡i
mgxKiYwU‡K wb‡Pi w¯Œ‡bi g‡Zv K¨vjKy‡jU‡i cÖ‡ek Kiv‡Z n‡e | Gi AbywgZ gvb wn‡m‡e 4 cÖ‡ek Kwi‡q

= evUb Pvc‡j Gi gvb cÖK…Z gvb w¯Œ‡bi g‡Zv cÖ`wk©Z n‡e |

(Key log- w12^2[+1$Qr128qr4==)

5| 25 = 2 mgxKiY n‡Z Gi gvb ‡ei Ki‡Z n‡e |

mgvavb- cÖ_‡g K¨vjKy‡jUiwU‡K Calulate mode-G Avb‡Z n‡e | Zvici i evUb Pvcvi ci cÖ_‡g wfwË

wn‡m‡e cÖ‡ek Kiv‡bvi c‡i 25 cÖ‡ek Kiv‡bv n‡jv | Gici Qr ‡P‡c = cÖ‡ek Kwi‡q mgxKi‡Yi Wvb
w`‡Ki Ask cÖ‡ek Kiv‡bv n‡jv | qr Pvcvi ci Gi AbywgZ gvb wn‡m‡e 3 cÖ‡ek Kwi‡q = Pvc‡j
djvdj w¯Œ‡b cÖ`wk©Z n‡e | G‡¶‡Î = 5.

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