Question

СРООООЧНО ДАЮ 20 БАЛЛОВ!!!!!

Answer 1

1) 15a⁵*b³*c⁴/(6a³*b²*c⁴)= сократим на 3*а³*b²c⁴=5/2 * a²*b=2,5a²b.

2) (c²-64b²)/(-2c²+16bc)=(c²-(8b)²)/(16bc-2c²)=(c-8b)(c+8b)/2c(8b-c)=

-(c-8b)(c+8b)/2c(c-8b)=-(c+8b)/2c.