Question

ex 3 du coroana repede

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-(25×14-340)×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+5^4)×(1+1)
=(51+5^4)×2
=102+2×5^4
=102+2×625
=102+1250
=1352
P.S. ^=la putere