Agar $a^{3}=8$ va $b^{2}=9$ bo'lsa, $a^{2}b$ ning qiymatini toping.
- A. $12$
- B. $6$
- C. $18$
- D. $9$
Daraja va uning xossalari, darajali ifodalar bo‘yicha savol
Javob va yechimni ko‘rish
Javob: $12$
Berilgan $a^{3}=8$ tenglamasidan $a$ ning musbat ildizini topamiz: $a=\sqrt[3]{8}=2$.
Shuningdek, $b^{2}=9$ dan $b$ ning musbat ildizini olishimiz mumkin: $b=\sqrt{9}=3$.
Endi $a^{2}b$ ifodasini hisoblaymiz: $a^{2}b=(2)^{2}\cdot 3=4\cdot 3=12$.
Demak, $a^{2}b$ ning qiymati $\displaystyle 12$, ya’ni javob A.
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Bu savol Daraja va uning xossalari, darajali ifodalar mavzusiga tegishli. Ta’riflar, formulalar va misollarni mavzu sahifasida ko‘ring.
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