Question

Zadania dotyczą pierwiastków i potęg. Są w załączniku

Answer 1

a) 

   2,5+(⅔ -1,8·⅚):(-⅓) =

= 2,5+(⅔ - ⁹/₅ ·⅚):(-⅓) =

= 2,5+(⅔ - ³/₂):(-⅓) =

= 2,5+(4/6 - 9/6):(-1/3) =

= 25/10 +(-5/6)·(-3) =

= 5/2 + 5/2 = 

= 10/2 =

= 5

 

b)

   ((2·√(1⁹/₁₆) - (-1/2)³·3⅕)):(4⁰-¾) =

= ((2√(25/16) +1/8 ·16/5):(1-3/4) =

= (2· 5/4 +16/40):(1/4) =

= (5/2 + 2/5)·4 =

= (25/10 + 4/10)·4 =

= (29/10)·4 = 

= 58/5 =

= 11⅗

 

 

Answer 2

a)2,5+(2/3-9/5*6/5) : (-1/3)=2,5+(2/3-54/25) : (-1/3)=2,5-112/75 : (-1/3)=-151/50*(-3)=453/50=

=9 3/50

b)2*5/4+1/8*16/5         5/2+2/5      29/10

 -------------------------- =------------=---------= 29/10*4=116/10=58/5= 11 3/5

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