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How do you factor the expression #k^2+ kf-2f^2#?

1 Answer

Jun 22, 2016

#(k+2f)(k-f)#

Explanation:

#k^2+kf-2f^2#
=#k^2+kf-f^2-f^2# this is the important part
=#k^2-f^2+kf-f^2#
=#(k+f)(k-f)+f(k-f)#
=#(k+2f)(k-f)#

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