a)3²×(7-8)³+1×4²=
9×(-1)³+16=
-9+16=7
b)(-16+15)⁸×[(-2)³×(-7)-(-7)²]=
(-1)⁸×[-8×(-7)-49]=
1×(56-49)=7
c)(-2)²×[(-5)⁸:(-5)⁶-24]⁵+(-3)²⁸:(-3)²⁶×(36-2²×2²⁰:2¹⁷)=
4×[(-5)²-24]⁵+(-3)²×(36-2⁵)=
4×(25-24)⁵+9×(36-32)=
4×1+9×4=
4+36=40
d)(-2)³×[28+(-3)⁹:(-3)⁶]⁷-(-2)¹⁵:(-2)¹²×[-48+(-7)¹⁴:(-7)¹²]=
-8×[7+(-3)³]⁷-(-2)³×[-48+(7)²]=
-8×(28-27)⁷+8×(-48+49)=
-8×1+8×1=-8+8=0
