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Answer 1

d

Explanation:

Answer 2

`2 {x}^(3) + 1.5 {x}^(2) - 5x`

Explanation:

Multply f(x)*g(x)

((x/2)/2)*(2x^2+x-3)

First get (f+g)

f+g=(x/2)-2)+(2x^2+x-3)

multply all eqn by 2

2(f+g)= x -4+4x^2+2x-6

2(f+g)= 4x^2+3x-10

devide by 2

(f+g) = 2x^2 + 1.5x -5

(f+g)(x) =

`2 {x}^(3) + 1.5 {x}^(2) - 5x`