tolong bantu ya dengan caranya

36.
f(x) = 2x - 4
gof(x) = 4x²  - 24x + 32
g(2x- 4) = 4x² - 24x + 32
g(x) = 4 {(x+4)/2}² - 24 {(x+4)/2} + 32
g(x)= (x+4)² - 12(x+4) + 32
g(x)= x² + 8x + 16  - 12x - 48 + 32
g(x) = x² - 4x

37.
f(x) = (2x-3)/(x+1)
y = (2x - 3)/(x+1)
2x - 3 = y(x+1)
2x - 3 = xy + y
2x - xy = y + 3
x(2 - y) = y + 3
x =(y+3)/(-y +2)

f⁻¹ (x)= (x+3)/(-x+2)


38.
lim(x->∞)  √(5x-1)² - √(25x² + 5x -7)
lim(x->∞) √(25x²-10x +1) - √(25x²+5x -7)
a=p = 25
b = -10
q = 5

limit = b- q / 2√a
limit = (-10-5)/ (2√25)
limit = -15/ 2(5)
limit = -3/2