How do you factor the trinomial #3x^2+9xy-30y^2#?
1 Answer
May 1, 2018
Explanation:
#"take out a "color(blue)"common factor "3#
#=3(x^2+3xy-10y^2)#
#"the factors of - 10 which sum to + 3 are + 5 and - 2"#
#=3(x+5y)(x-2y)#
