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lions [1.4K]
3 years ago
14

Evaluate (f-g)(3t) for f(x)=x²+1 and g(x)=x-4

Mathematics
2 answers:
zysi [14]3 years ago
6 0
(f-g)(3t) \\  \\ f(x)-g(x) \\  \\ f(3t)-g(3t) \\  \\ ((3t)^2+1)-((3t)-4) \\  \\ 9t^2+1-3t+4 \\  \\ 9t^2-3t+5
Pavlova-9 [17]3 years ago
5 0
F(x)=x²+1

g(x)=x-4

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

f(x)-g(x)

=x²+1-(x-4)

=x²+1-x+4

=x²-x+5

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

Therefore:

(f-g)(3t)

=(3t)²-3t+5

=3²t²-3t+5

=9t²-3t+5
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