Question

va rooooggggggggggg este urgent ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

= 21/4 :(⁵⁾5/2-²⁾2/5)+5/6:5/3-1

= 21/4:(25/10-4/10)+5/6*3/5-1

= 21/4:21/10+ 15/30-1

= 21/4*10/21 + 1/2-1

= 10/4+1/2-1

= 5/2+1/2-²⁾1

=5/2+1/2-2

= 4/2

= 2

-

b)

= (-3/4+3/4*2/1)*(-4/3)

= (-3/4+6/4)* (-4/3)

= 3/4*(-4/3)

= 0

-

c)

=2¹⁷⁰:(-2³)⁵⁶+2²-3+1

= 2¹⁷⁰:2¹⁶⁸+4-3+1

= 2²+4-3+1

= 4+4-3+1

= 5+1

= 6