Mathematics

6 May, 06:03

Let f (x) = 7x3-2x-12f (x) = 7x3-2x-12 and g (x) = - 3x3-8x2+10xg (x) = - 3x3-8x2+10x.

What is the function rule for (f+g) (x) (f+g) (x) ?

A: (f+g) (x) = 4x6-8x2+8x-12 (f+g) (x) = 4x6-8x2+8x-12

B: (f+g) (x) = 4x3-8x2+8x-12 (f+g) (x) = 4x3-8x2+8x-12

C: (f+g) (x) = 4x3-12x2+8x-12 (f+g) (x) = 4x3-12x2+8x-12

D: (f+g) (x) = 4x6-8x2+12x-12

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