Answer:His error lies in the subtraction of 12 from 8 , he wrote 4 instead of -4 , as 8-12 gives -4 instead of 4.
Step-by-step explanation:
Step 1
Rewriting this to a mathematical expression 2 cubed (3 minus 1) + 4 (8 minus 12) and solving correctly gives
2³(3-1)+ 4(8-12)
=8(2) + 4(-4)
= 16 +(-16)
16-16=0
Step 2-----Jacki's evaluation
2³(3-1)+ 4(8-12)
= 2³(2) +4(4)
= 8(2) +16= 16+ 16 =32
His error lies in the subtraction of 12 from 8 , he wrote 4 instead of -4 , as 8-12 gives -4 instead of 4.
