Объяснение:
f(x)=2x + 3; g(x)=x² - 6x
f(g(x)) = 2(x² - 6x) + 3 = 2x² - 12x + 3
g(f(x)) = (2x+3)²-6(2x+3) = 4x² + 12x + 9 - 12x - 18 = 4x² - 9
f(f(x)) = 2(2x+3)+3 = 4x + 9
g(g(x)) = (x²-6x)²-6(x²-6x) = x⁴ - 12x³ + 36x² - 6x² + 36x = x⁴ - 12x³ + 30x² + 36x
Объяснение:
f(x)=2x + 3; g(x)=x² - 6x
f(g(x)) = 2(x² - 6x) + 3 = 2x² - 12x + 3
g(f(x)) = (2x+3)²-6(2x+3) = 4x² + 12x + 9 - 12x - 18 = 4x² - 9
f(f(x)) = 2(2x+3)+3 = 4x + 9
g(g(x)) = (x²-6x)²-6(x²-6x) = x⁴ - 12x³ + 36x² - 6x² + 36x = x⁴ - 12x³ + 30x² + 36x