Hi, can someone help with these two questions ASAP! (Ignore the multiple choice I circled, not sure if it’s correct) Thanks!!

1) D.

2) E. The coefficient of is -16.

Step-by-step explanation:

1) A polynomial is an algebraic expression of the form , where is the grade of the polynomial. In this case, the only equation that satisfies this definition is:

Correct D

2) Let , we proceed to expand the expression by algebraic means:

We see that coefficients for and are -16 and 0, respectively. Hence, the incorrect answer is E.

5+2x=a

asdasdsaadsaddsasds

d

step-by-step explanation:

i used the pitagoras theoreme