How do you expand and simplify #3(2x-1)(5x+4)#?

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Answer 1 · 2016-06-19T03:42:39

#3(2x-1)(5x+4)=30x^2+9x-12#

#3(2x-1)(5x+4)#

= #(3xx2x-3xx1)(5x+4)#

= #(6x-3)(5x+4)#

= #6x(5x+4)-3(5x+4)#

= #6x xx5x+6x xx4-3xx5x-3xx4#

= #30x^2+24x-15x-12#

= #30x^2+9x-12#