help plz:
4. Multiply the following signed numbers:
a. (-42x)(+2x) =
b. (+7x)(-4x)(-3x) =
c. (+7)(-4)(-4) =
d. (+10)(-2)(-2)(+4) =
help plz:
4. Multiply the following signed numbers:
a. (-42x)(+2x) =
b. (+7x)(-4x)(-3x) =
c. (+7)(-4)(-4) =
d. (+10)(-2)(-2)(+4) =