Question

i have a simple question if i have (f + g)(x) = 2x + 7 + 6x – 5 and i combine 2x and 6x is it 8x or 8x^2?

Answer 1

It is 8x because you're adding them not multiplying them. If you were multiplying it would be8x^2

Answer 2

(f + g)(x) = 2x + 7 + 6x – 5 

// 2x + 6x = 8x
// 7 - 5 = 2

Therefore,
(f + g)(x) = 8x + 2

Answer: 8x + 2