1. (4x2 – 2y3)(4x2 + 2y3) = 2. (10m + 8n5)( 10m - 8n5) =
3. (15x – 8y2)(15x + 8y2)=
4. (3b - 1)(3b + 1) – (b - 5)(b + 5)=
5. (6m – 10n)(6m + 10n) – 100n2
6. 8x(1 + 2x) – (4x + 3)(4x - 3)
7. (x + y)(x - y) + (y - a)(y + a)
8. (0,9x7 – 2y3)(0,9x7 + 2y3)
9. 9 (2 + 3x)(2-3х) + (9x + 6)(9x - 6)

Vikysiax99    3   22.01.2022 11:56    3