Answer:
a. 19x-13 b. [tex]2(32x^{15}y^{3}-1).[/tex]
Step-by-step explanation:
a. 3(-3+5x)-1(4-4x) = -9+15x-4+4x = 15x+4x-9-4 = 19x-13.
b. [tex]64x^{15}y^{3}-2(-15e^{5}\frac{t}{30}e^{-2}t^{-3})^{0}[/tex]
= [tex]64x^{15}y^{3}-2 = 2(32x^{15}y^{3}-1).[/tex]
