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Выполните умножение:
1) (c-8) (c+8)=...
2) (2ab+3)(2ab-3)=(2ab)²-3²=...
3) (5x-7y²)(5x+7y²)=...
4) (a⁴+b³)(b³-a⁴)=(b³-a⁴)=(b³)²-(a⁴)²=
Выполните умножение:
1) (c-8) (c+8)=...
2) (2ab+3)(2ab-3)=(2ab)²-3²=...
3) (5x-7y²)(5x+7y²)=...
4) (a⁴+b³)(b³-a⁴)=(b³-a⁴)=(b³)²-(a⁴)²=
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Answers & Comments
Ответ:
1) (c-8) (c+8)=с²-8с+8с-64=с²-64
2) (2ab+3)(2ab-3)=(2ab)²-9
3) (5x-7y²)(5x+7y²)=5x²-49y⁴
4) (a⁴+b³)(b³-a⁴)=b⁶-a⁸