Автор - bibigul26

упростите выражения
1 )(4х^3-1)(9х^3+5)-(6х^3-1)^2
2)(х^4-1)^2-(х^4+4)-(х^4-6)
3)(х^7-3)(х^7+7)-(х^7+2)^2
4)(х^8+9)(11-х^8)-(х^8+1)^2

Ответ

Автор - mshahbanova

1 )(4х³-1)(9х³+5)-(6х³-1)²=(36x⁶+20x³-9x³-5)-(36x⁶-12x³+1)=

36x⁶+20x³-9x³-5-36x⁶+12x³-1=23x³-6

2)(х⁴-1)²-(х⁴+4)-(х⁴-6)=x⁸-1-x⁴-4-x⁴+6=x⁸+1

3)(х⁷-3)(х⁷+7)-(х⁷+2)²=(x⁴⁹+7x⁷-3x⁷-21)-(x⁴⁹+4x⁷+4)=x⁴⁹+7x⁷-3x⁷-21-x⁴⁹-4x⁷-4=-25

4)(х⁸+9)(11-х⁸)-(х⁸+1)²=(11x⁸-x⁶⁴+99-9x⁸)-(x⁶⁴+2x⁸+1)=11x⁸-x⁶⁴+99-9x⁸-x⁶⁴-2x⁸-1=

2x⁶⁴-98

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