If f 1 4 5 6 6 1 and gx 5x 5 find f5 g5 Given fx 5x 3

If f = {(1, -4), (5, 6), (6, 1)} and g(x) = 5x + 5, find f(5) + g(5) Given f(x) = 5x + 3 and g(x) = x^2 + 5x - 7 find (f-g)(x)

Solution

1. f= {(1,-4),(5,6),(6,1)} and g(x)= 5x+5

f(5)=6   and g(5)=5(5)+5 =30

Therefore f(5)+g(5)=36

Correct option is B

2. f(x)=5x+3   and g(x)=x2+5x-7

(f*g)(x) = (5x+3)(x2+5x-7) = 5x3+25x2-35x +3x2+15x-21=5x3+28x2-20x-21

Correct option is A

 If f = {(1, -4), (5, 6), (6, 1)} and g(x) = 5x + 5, find f(5) + g(5) Given f(x) = 5x + 3 and g(x) = x^2 + 5x - 7 find (f-g)(x)Solution1. f= {(1,-4),(5,6),(6,1)

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