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= x^2 -3 = 2^2 - 3= 4-3 =1
b. f*g(x)= (2x-3)(x^2-2x)
= 2x^3 - 4x^2 -3x^2 + 6x = 2x^3 - 7x^2 + 6x
c. fog(x)= f(g(x)) = f(x^2-2x)
= 2(x^2-2x) - 3 = 2x^2 - 4x -3
d. gof(1)= g(f(x)) = g(2x-3)
= (2x-3)^2 -2x
= 4x^2 -12x + 9 - 2x
= 4x^2 -14x + 9
= 4.1^2 - 14.1 + 9 = 4 - 14 + 9 = -1