Question

Help again please and thank you

Answer 1

Step-by-step explanation:

b) 15 + 4x is the answer for above question

Answer 2

Answer:

Option (b)

Step-by-step explanation:

First, group the terms according to their powers.

The terms x^2 and -x^2 have a power of 2, 4x has a power of 1 and 12 and 3 have a power of 0. (x^0 = 1 so 12 = 12x^0 and 3 = 3x^0)

Now, rearrange the polynomial according to descending power. This gives

x^2 - x^2 + 4x + 12 + 3 = 0 + 4x + 12 + 3

= 4x_+_15 which is what is given in option (b).

Hence, option (b) is correct.