A=1.7×10²-5²×2
=1.7×100-25×2
=170-50
=120
B=10×(-2)⁴+(3×2)²
=10×16+6²
=160+36
=196
C=[tex](8-9)^{11\\}[/tex]x(-6)-3²
=[tex](-1)^{11}[/tex]×(-6)-3²
=(-1)×(-6)-9
=6-9
=-3
D=6×5+(-2)⁻³×80
=30+80/-8
=30-10
=20
Et voilà! :)
