Shartli va shartsiz operatorlar

Al-jabr: 3x, chapga -3x bo`lib o`tasan !
- 54, sen o`ngga +54 bo`lib o`tasan !

“VAL – MUQOBALA” guruhining taqdimoti: Bunda “VAL – MUQOBALA” guruhi Val – muqabala haqida tushuncha beradilar va bu amalni misollarda ko`rsatadilar. Jumladan, Al – Xorazmiyning “ Kitob al – muxtasar fi hisob al – jabr val – muqabala” asaridagi val-muqabala tenglamaning ikkala qismidan teng hadlarni tashlab yuborishni bildirgan. Bir noma’lumli istalgan tenglamani yechish uchun bajariladigan uch amalning ikkinchisi, ya’ni o`xshash hadlarni ixchamlashda val –muqabala amalidan foydalaniladi. “ Val-muqabala usuliga ko`ra, tenglamaning ikkala qismidagi teng hadlarni tashlab yuborish mumkin.

23x – 31 +4x = 23x +76 – 31 4x = 76 x = 76 : 4 x = 19

Val-muqabala: chap va o`ng qismdagi 23x lar-u -31 lar, sizlar bilan xayrlashamiz !

Mavzuga doir sinov misollari :
1) 5x = 2) 3x – 5 = 10 – x
3) 5x + 3(3x + 7) = 35 4) .
Har bir to`g`ri yechilgan misol bir ball bilan baholanadi.


Mavzuga doir test sinovi :

1. 
   ax = b tenglama a≠0 bo`lsa nechta yechimga ega ?
   

A) 1 B) 2 C) 3 D) yechimga ega emas E) cheksiz ko`p
2) ax = b tenglama a=0, b=0 bo`lsa nechta yechimga ega ?
A) 1 B) 2 C) 3 D) yechimga ega emas E) cheksiz ko`p
3) ax = b tenglama agar a=0, ammo b≠0 bo`lsa nechta yechimga ega ?
A) 1 B) 2 C) 3 D) yechimga ega emas E) cheksiz ko`p
4) tenglamaning ildizini toping.
A) 64 B) 4 C) 1 D) yechimga ega emas E) topolmadik
5) -0,1x = 10<sup>3</sup> tenglamaning ildizini toping.
A) 10000 B) -10000 C) 100 D) -100 E) 0
6) 4x + 4 = x +5 tenglamaning ildizini toping.
A) 3 B) 1 C) D) E)
7) 8x – (7x+8) = 9 tenglamaning ildizini toping.
A) B) 1 C) D) 17 E) 0
8) tenglamaning ildizini toping.
A) 1,5 B) 3 C) 4,5 D) 7,5 E) 0
Har bir to`g`ri topilgan test bir ball bilan baholanadi.