Question

1) (3b-2)(5-2b)+6b²
2) (7y-4)(2y+3)-13y
3) x³-(x²-3x(x+3)
4) 5b³+(a²+5b)(ab-b²)
5) (a-b)(a+2)-(a+b)(a-2)
6)(x+y)(x-y)-(x-1)(x-2)​

Answer 1

Ответ:

1. 19b - 10
2. 14y^2 - 12
3. x ×(x^2 + 2x + 9)
4. a^3 - a^2 b^2 + 5ab^2
5. b^2 + 5ab^24a - 2 ab
6. -y^2 + 3x - 2