The product of 8 - ¡ and it's conjugate is what?
1 Answer
Jan 31, 2018
Explanation:
#"the conjugate of "8-i" is "8color(red)(+)i#
#rArr(8-i)(8+i)#
#"expand factors using FOIL"#
#=64cancel(+8i)cancel(-8i)-i^2#
#[i^2=(sqrt(-1))^2=-1]#
#=64-(-1)=65#