How do you factor #2x^2+7xy-15y^2#?
3 Answers
Mar 16, 2018
Explanation:
~Hope this helps! :)
Mar 16, 2018
Explanation:
#"factor using the a-c method"#
#"The factors of - 30 which sum to + 7 are + 10 and - 3"#
#rArr2x^2+10xy-3xy-15y^2larrcolor(blue)"split middle term"#
#=color(red)(2x)(x+5y)color(red)(-3y)(x+5y)larrcolor(blue)"factor by grouping"#
#=(x+5y)(color(red)(2x-3y))#
#rArr2x^2+7xy-15y^2=(x+5y)(2x-3y)#
Mar 16, 2018