How do you find the product #(5y+7)^2#?
1 Answer
May 3, 2017
Explanation:
Each term in the second bracket is multiplied by each term in the first bracket as shown below.
#(5y+7)^2#
#=(5y+7)(5y+7)#
#=(color(red)(5y+7))(5y+7)#
#=color(red)(5y)(5y+7)color(red)(+7)(5y+7)#
#=(color(red)(5y)xx5y)+(color(red)(5y)xx7)+color(red)(7)xx5y)+(color(red)(7)xx7)#
#=25y^2+35y+35y+49#
#=25y^2+70y+49#
