Question

Write the coefficient of y in (7-y)^2

Answer 1

Answer:

5{{•¶¢¶`∆$€••√π770)/!:"{¢\^™®%™

Answer 2

Answer:

-14 is the coefficient of (7 - y) ^2.

(a-b) ^2...

a^2 - 2 ab +b^2

Same here with (7 - y) ^2.

49 - 14y +y^2

so here -14 is the coefficient of y.