f) \(=\dfrac{24}{1}=24\)
Bài 2:
a) \(=36\left|1-a\right|=36\left(a-1\right)=36a-36\)
b) \(=\sqrt{225.a^2}-3a=15\left|a\right|-3a=15a-3a=12a\)
c) \(=\dfrac{1}{a-b}.a^2.\left|a-b\right|=\dfrac{1}{a-b}.\left(a-b\right).a^2=a^2\)
d) \(=a^2-6a+9-6\left|a\right|=a^2-6a-6\left|a\right|+9\)