Question

1) 3(4-5ху) (4+5ху)
2)(х2-у3)2
3)(с+m)2 - (c-m)2 Срочно пж

Answer 1

1) 3*(16-25х²у²) = 48-75х²у²
2) х⁴-2х²у³+у⁶
3)c²+2cm+m²-(c²-2cm+m²) = c²+2cm+m²-c²+2cm-m² = 4cm