Question 75552
Your soultion is incorrect
{{{ 2m(5m-3)(4m+7) }}}
First, I would multiply the 2 quantities (5m-3)(4m+7)
F: {{{ 5m * 4m = 20m^2 }}}
O: {{{ 5m * 7 = 35m }}}
I: {{{ -3 * 4m = -12m }}}
L: {{{ -3 * 7 = -21 }}}
Combine like terms
{{{ 2m(20m^2 +27m -21) }}}
Distribute the 2m
{{{ 40m^3 + 54m^2 -42m }}}
Done