Сократите дробь: a) (28a⁶b⁸c³)/(36a⁷b⁸c) б) (y²-9x²)/(18x²-6xy) ( )/( ) - дробь

Question

Сократите дробь:

a) (28a⁶b⁸c³)/(36a⁷b⁸c)

б) (y²-9x²)/(18x²-6xy)

( )/( ) - дробь

Answer 1

а)=7a^6B8^c3/9a^7b^8c=7c^2/9a

б) =(y-3x)(y+3x)/6x(3x-y)=-(3x-y)(y+3x)/6x(3x-y)=-y-3x/6x