put each of the following in standard form. Also note and the leading coefficient

Question

6x2 - 7x5 +2x

4x + x2 +1

3 + 16 +7x3 - 2x

Answer 1

-7x^5 + 6x^2 + 2x

x^2 + 4x + 1

7x^3 - 2x + 19 (is there a typo here?)