Question

Liczby ujemne zad. w załączniku (71)

Answer 1

A)
- 1 i 1/4 * (-4) =

= - 5/4 * (-4) = (skracam ułamki)

= - 5/1 * (-1) =

= 5/1 =

=5



b)
- 6 i 2/3 : 2=

= - 20/3 : 2=

= - 20/3 * 1/2 = ( skracam ułamki)

= -10/3 * 1/1=

= - 10/3=

= - 3 i 1/3



c)

-0,2 * (-0,2) =0,04


d)
- 3 i 1/3 * 3=

= - 10/3 * 3 = (skracam ułamki)

= - 10/1 * 1=

= - 10/1=

= - 10



e)
(-3)^2 * 1/3=

= 9 * 1/3 = (skracam ułamki)

= 3 * 1/1=

= 3/1=

= 3



f)
(1/3)^2 *(-9) =

= 1/9 * (-9) = (skracam ułamki)

= 1/1 * (-1) =

= - 1/1 =

= - 1




g)
6^2 : 1/2=

= 36 : 1/2=

= 36 * 2/1=

= 72/1=

= 72




h)
3 i 3/4 : (-1,25)^2=

= 15/4 : ( - 1 i 25/100)^2=

= 15/4 : (- 1 i 1/4)^2=

= 15/4 : (-5/4)^2=

= 15/4 : 25/16=

= 15/4 * 16/25= (skracam ułamki)

= 3/1 * 4/5=

= 12/5=

= 2 i 2/5