How do you multiply #(2x-3)(x+4)#?

1 Answer
Don't Memorise
Dec 31, 2015

#= color(blue)(2x^2 +5x -12#

Explanation:

#color(blue)((2x-3))(x+4)#

Each term of the first bracket is multiplied with each term within the second bracket.

#color(blue)((2x) )xx (x) +color(blue)((2x)) xx (4)+ color(blue)((-3))(x)+color(blue)((-3))xx (4)#

#= 2x^2 +8x -3x -12#

#= color(blue)(2x^2 +5x -12#

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