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a)
u\left(s\left(x\right)\right)=\left(3x+2\right)^5
b)
u\left(s\left(x\right)\right)=\tan\left(4x+5\right)
c)
u\left(s\left(x\right)\right)=\sin^4x
d)
u\left(s\left(x\right)\right)=\sin x^4