Question

ПОМОГИТЕ ПОЖАЛУЙСТА КТО МОЖЕТ1!!!!!!!!!!!!!!!!!!!!!

Answer 1

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Answer 2

1.
а)(а+4)/4а*8а²/(а²-16)=(а+4)/4а*8а²/(а-4)(а+4)=2а/(а-4)
б)(3х²у-³/z)²:(3х)³z-²/y^5=9x⁴y-^6/z²*y^5/27x³z-²=x*y^5/z²*3z-²=y-¹/3^0=y-¹/0=1/y¹
4.
((b+1)/(b-1)-b/(b+1)):(3b+1)/(2b-2)=(b+1)(b+1)-b(b-1)/(b-1)(b+1)*2(b-1)/(3b+1)=(b+1)-b(b-1)*2/3b+1=b+1-b²+b/3b+1=2b+1-b²/3b+1=(b-1)²/3b+1