Question

СРОЧНО! Даю 65 баллов

Answer 1

Ответ:

....................

Answer 2

1. 1) (a-b)²=a²-2ab+b²

2)(a+6)²=a²+12a=+36

3)(3a-5)²=9a²-30a+25

4)(4a+3b)²=16a²+24ab+9b²

5)(a⁴-8t³)²=a⁸-16a⁴t³+64t⁶

2. 1)(a+1)(a-7)-(a+3)²=-12a-16

2)2(3a-b²)+12ab=18a²+2b²

3.(7-3b)(7+3b)+(3b+2)²-12b=49-9b²+9b²+12b+4-12b=53