Question

(3d+5)(5d-1)-(6d-3)(2-8d)

Answer 1

(3d+5)•(5d-1)-(6d-3)•(2-8d)

15d²-3+25d-5-(12-48d²-6+24d)

15d²-3+25d-5-(36d-48d²-6)

15d²-3+25d-5-36d+48d²-6

63d²-14d+1

Надеюсь помогла!!