a) 35x^4/12y^5*8y^4/21x^5=5/3y*2/3x=10/9xy
b) ab^3/7-7p:a^2b^2/1-2p+p^2=ab^3/7(1-p)*1-2p+p^2/a^2b^2=b/7(1-p)*(1-p)^2/a=b/7*1-p/a=b*(1-p)/7a=b-bp/7a
Объяснение:
a) 35x^4/12y^5*8y^4/21x^5=5/3y*2/3x=10/9xy
b) ab^3/7-7p:a^2b^2/1-2p+p^2=ab^3/7(1-p)*1-2p+p^2/a^2b^2=b/7(1-p)*(1-p)^2/a=b/7*1-p/a=b*(1-p)/7a=b-bp/7a
Объяснение: