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\left(3a\right)^{2}-\left(-b\right)^{2}
\left(3a\right)^{2}-\left(-b\right)^{2} natijani olish uchun 18a^{2}-2b^{2} ning har bir ifodasini 2 ga bo‘ling.
3^{2}a^{2}-\left(-b\right)^{2}
\left(3a\right)^{2} ni kengaytirish.
9a^{2}-\left(-b\right)^{2}
2 daraja ko‘rsatkichini 3 ga hisoblang va 9 ni qiymatni oling.
9a^{2}-\left(-1\right)^{2}b^{2}
\left(-b\right)^{2} ni kengaytirish.
9a^{2}-b^{2}
2 daraja ko‘rsatkichini -1 ga hisoblang va 1 ni qiymatni oling.
\left(3a\right)^{2}-\left(-b\right)^{2}
\left(3a\right)^{2}-\left(-b\right)^{2} natijani olish uchun 18a^{2}-2b^{2} ning har bir ifodasini 2 ga bo‘ling.
3^{2}a^{2}-\left(-b\right)^{2}
\left(3a\right)^{2} ni kengaytirish.
9a^{2}-\left(-b\right)^{2}
2 daraja ko‘rsatkichini 3 ga hisoblang va 9 ni qiymatni oling.
9a^{2}-\left(-1\right)^{2}b^{2}
\left(-b\right)^{2} ni kengaytirish.
9a^{2}-b^{2}
2 daraja ko‘rsatkichini -1 ga hisoblang va 1 ni qiymatni oling.