Предмет: Алгебра, автор: dgerasenko737

Помогите пожалуйста

Задание прикреплено на фото

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Ответы

Автор ответа: yalopas

1

Ответ:

1.(3x-4)(3x+4)(9x²+16)-(9x²-1)²=

=(9x²-16)(9x²+16)-(81x⁴-18x²+1)=

=81x⁴-256-(81x⁴-18x²+1)=

=81x⁴-256-81x⁴+18x²-1=-257+18x²

2. (2x-5)(2x+5)(4x²+25)-(4x²-3)²=

=(4x²-25)(4x²+25)-(16x⁴-24x²+9)=

=16x⁴-625-(16x⁴-24x²+9)=

=16x⁴-625-16x⁴+24x²-9=-634+24x²

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