How do you factor #3bx -12by +cx-4cy#?

1 Answer
Jim G.
Dec 11, 2017

#(x-4y)(3b+c)#

Explanation:

#"factorise by "color(blue)"grouping"#

#color(red)(3b)(x-4y)color(red)(+c)(x-4y)#

#"take out "color(blue)"common factor "(x-4y)#

#=(x-4y)(color(red)(3b+c))#

#rArr3bx-12by+cx-4cy=(x-4y)(3b+c)#

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