5.
a) (2a - 7)(a + 4) =
b) (- 3x - 5y)(2x + 4y) =

c) (a + 3)(a - 1) +(a - 7)(a + 5) =
d) (m - 4)(5m + 2) – (2m + 3)(4 - 3 m) =
e) ( x – 4)(do potegi drugiej) =

PLS HELP





Adrianna thx