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How do you multiply #(x + 1)(x + 4)#?

↳Redirected from "What is the concentration of pure water at #298*K# given a #"density"# of #1.00*g*mL^-1#?"

1 Answer

Jul 1, 2015

#=color(blue)(x^2 + 5x +4#

Explanation:

#color(blue)((x+1))(x+4)#

#=color(blue)((x) ). (x+4) +color(blue)(1). (x+4)#

#=x^2 + 4x+x +4#
#=color(blue)(x^2 + 5x +4#

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