Algebraik ifodalar va ayniyatlar — test savollari javoblari bilan (3-sahifa)
Matematika · 24 ta ochiq savol (bankda jami 120 ta) · har birida to'g'ri javob va izoh
21. $(a + b + c)^2$ ni yoying.
- A) $a^2 + b^2 + c^2 + ab + bc + ca$
- B) $a^2 + b^2 + c^2 + 2ab + 2bc + 2ca$
- C) $a^2 + b^2 + c^2$
- D) $a^2 + b^2 + c^2 + 2abc$
Javobni ko'rish
To'g'ri javob: B) $a^2 + b^2 + c^2 + 2ab + 2bc + 2ca$
22. $(x + 1)^3 - (x - 1)^3$ ni soddalashtiring.
- A) $2$
- B) $6x^2 + 2$
- C) $2x^3 + 6x$
- D) $6x$
Javobni ko'rish
To'g'ri javob: B) $6x^2 + 2$
23. $x^6 - y^6$ ni ko'paytuvchilarga ajrating.
- A) $(x^3 - y^3)(x^3 + y^3)$
- B) $(x - y)(x + y)(x^4 + x^2y^2 + y^4)$
- C) $(x - y)(x^2 + xy + y^2)(x + y)(x^2 - xy + y^2)$
- D) Barcha javoblar to'g'ri
Javobni ko'rish
To'g'ri javob: D) Barcha javoblar to'g'ri
24. $(2a - 3b)^3$ dagi $a^2b$ ning koeffitsientini toping.
- A) $-36$
- B) $36$
- C) $-12$
- D) $12$
Javobni ko'rish
To'g'ri javob: A) $-36$
Bu — mavzuning ochiq namuna qismi. To'liq bank, vaqt rejimi, tahlil va xatolar ustida ishlash — test rejimida.