514. Упростите выражение:
1) (x+1)(x-1)-(х + 5)(х – 5) + (х + 1)(х – 5);
2) 81a^8 — (3а^2 — b^3 ) (9а^4 + b^6 ) (3a^2 + b^3 )
1) (x+1)(x-1)-(х + 5)(х – 5) + (х + 1)(х – 5);
2) 81a^8 — (3а^2 — b^3 ) (9а^4 + b^6 ) (3a^2 + b^3 )
More Questions From This User See All
Answers & Comments
Ответ: :))))))
Объяснение:
Ответ летит к тебе....:D
1)(x+1)(x-1)-(х + 5)(х – 5) + (х + 1)(х – 5)=
=х²-1-(х²-25)+х²-5х+х-5=
=х²-1-х²+25+х²-5х+х-5=
=19+х²-4х=х²-4х+19
2)81a^8 — (3а^2 — b^3 ) (9а^4 + b^6 ) (3a^2 + b^3 )=
=81а⁸-(9а⁴-b⁶)(9a⁴+b⁶)=81a⁸-(81a⁸-b¹²)=
=81a⁸-81a⁸+b¹²=b¹²