How do you find the product #(9-2y)^2#?

1 Answer
Feb 9, 2018

Answer:

#4y^2-36y+81#

Explanation:

#(9-2y)^2=(9-2y)(9-2y)#

#"each term in the second factor is multiplied by each term"#
#"in the first factor"#

#rArr(color(red)(9-2y))(9-2y)#

#=color(red)(9)(9-2y)color(red)(-2y)(9-2y)#

#"distributing gives"#

#=81-18y-18y+4y^2#

#=4y^2-36y+81#