Simplify. 2/3a * 2/a^2

A. 4/3a^2; where a =/= 0
B. 1/a^2; where a =/= 0
C. 4/3a^3; where a =/= 0**
D. 4/3a^2

Multiply. X+2/5x-15*(10x^2-25x-15)
A. (2x+1)/5(x-3)
B. (2x+1)(x-3)/5**
C. (10x+5)(x+2)
D. (X+2)(2x+1)

#1 ok

#2
(x+2)/(5x-15) * (10x^2-25x-15)
(x+2)/(5(x-3)) * 5(x-3)(2x+1)

the 5(x-3) cancels, leaving

(x+2)(2x+1) if x≠3