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If f(x) = x ² +1 and g(x) =3x+ 1,find [f(4)] ²

User Ben Laan
by
8.2k points

2 Answers

2 votes

Answer:

289

Explanation:

Evaluate f(4) by substituting x = 4 into f(x), that is

f(4) = 4² + 1 = 16 + 1 = 17, then

[f(4) ]² = 17² = 289

User Radiaph
by
8.4k points
5 votes

Answer:

289

Explanation:

We don't need
g at all for this.

We will need to know
f(4) before continuing...


f(4) can be found by replacing
x in
f(x)=x^2+1 with
4:


f(4)=4^2+1


f(4)=16+1


f(4)=17

-------------------

Now let's find
[f(4)]^2:


[f(4)]^2


[17]^2


17(17)


289

User Plhn
by
7.9k points

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