Question

9ab ²+6abc／3ab 9a²+6ab+b²／3a+b x²-36／2x+12 这些分式约分怎么约？

过程也写一下

Answer 1

9ab ²+6abc／3ab
=3ab(3b+2c)/3ab
=3b+2c

9a²+6ab+b²／3a+b
=(3a+b)²/(3a+b)
=3a+b

x²-36／2x+12
=(x-6)(x+6)/2(x+6)
=(x-6)/2

Answer 2

9ab ²+6abc／3ab
=3ab(3b+2c)/3ab
=3b+2c

9a²+6ab+b²／3a+b
=(3a)²+2*3a*b+b²/3a+b
=(3a+b)²/3a+b
=3a+b

x²-36／2x+12
=(x+6)(x-6)/2(x+6)
=x-6/2