d) 2×4+4²= 8+16 = 24
e) 2²-2³= 4-8= (-4)
f) 3×4-1= 11
d) 3× (-1)²+2× (-1)= 3+(-2)= 1
e)
[tex] \frac{ - 7}{8 - 4 \times ( - 1)} = \frac{ - 7}{12} [/tex]
f) 2(4-1+1)-5= 8-2+2-5= 3
