What is the value of this expression when m =-3 given #2m^5-3m^3 + 12#?
1 Answer
Jul 2, 2018
Explanation:
#"substitute "m=-3" into the expression"#
#=2xx(color(red)(-3))^5-3xx(color(red)(-3))^3+12#
#=(2xx-243)-(3xx-27)+12#
#=-486-(-81)+12#
#=-486+81+12=-393#
