Question

a) 10+4×3^2-7×5-(3+2^3)
b) 2017-{[(42-(5^2×14-85×4)×2]×3+2^6}
c) (10^2-7^2+5^4)×(223^0+1^1500

Answer 1

a) 10+4×3^2-7×5-(3+2^3)=
=10+4×9-35-(3+8)=
=10+36-35-11=0

b) 2017-{[(42-(5^2×14-85×4)×2]×3+2^6}=
=2017-{[(42-(25×14-85×4)×2]×3+64}=
=2017-{[(42-(350-340)×2]×3+64}=
=2017-[(42-10×2)×3+64]=
=2017-[(42-20)×3+64]=
=2017-(22×3+64)=
=2017-(66+64)=
=2017-130=
=1887


c) (10^2-7^2+5^4)×(223^0+1^1500) =
=(100-49+625)×(1+1) =
=(51+625)×2 =
=676×2 =1352