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26 July, 18:54

G (n) = n² - 40

f (n) = 2n - 5

Find (gºf) (4)

A=3

B=59

C=-5

D=45

E=117

+3
Answers (1)
  1. 26 July, 22:28
    0
    The value of (gof) (4) is - 31

    Step-by-step explanation:

    Given as:

    g (n) = n² - 40

    f (n) = 2n - 5

    So, (gof) (n) = (2n - 5) ² - 40

    Or, (gof) (n) = 4n² - 20n + 25 - 40

    Or, (gof) (n) = 4n² - 20n - 15

    Now At n = 4

    I. e (gof) (4) = 4 (4) ² - 20 (4) - 15

    Or, (gof) (4) = 64 - 80 - 15

    Or, (gof) (4) = - 31

    Hence The value of (gof) (4) is - 31 Answer
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