Q. f(x)=6−21xh(x)=4(x−3)2Write f(h(x)) as an expression in terms of x.f(h(x))=
Identify functions and composition: Identify the given functions and the composition we need to find.We have two functions:f(x)=6−21xh(x)=4(x−3)2We need to find the composition f(h(x)), which means we will substitute h(x) into f(x) where x is.
Substitute h(x) into f(x): Substitute h(x) into f(x).To find f(h(x)), we replace every x in f(x) with h(x):f(h(x))=6−(21)h(x)Now we need to substitute the expression for h(x) into this new function.
Perform the substitution: Perform the substitution.Substitute h(x)=4(x−3)2 into the expression for f(h(x)):f(h(x))=6−21(4(x−3)2)
Simplify the expression: Simplify the expression.Now we simplify the expression by distributing the 21 into 4(x−3)2:f(h(x))=6−2(x−3)2
Expand the squared term: Expand the squared term (if necessary).In this case, we can leave the expression in its factored form, as it is already simplified. So, the final expression for f(h(x)) is:f(h(x))=6−2(x−3)2
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