Substitute a=40 and b=0.4 into the given expression:
4(2.2(40)-20(0.4))+6(40)(0.2)4(88-8)+6(8)4*(80)+48320+48368
Therefore, the value of the expression is 368.
Substitute a=40 and b=0.4 into the given expression:
4(2.2(40)-20(0.4))+6(40)(0.2)
4(88-8)+6(8)
4*(80)+48
320+48
368
Therefore, the value of the expression is 368.