Question

SIEMA BARDZO PROSZĘ O SZYBKIE OBLICZENIA

Answer 1

Zad.2

a)

-5 x(-5)^9 :(-5)^8 =(-5)^10:(-5)^8 =(-5)^2 =25

b)

(-3)^7:(-3)^6 x (-3)^2 =(-3):(-3)^2 =(-3)^(-1) = -1/3

c)

(0,7)^6 x (1 3/7)^6 -(1,6)^3:(0,8)^3 =

=(7/10)^6 x (10/7)^6 - (16/10)^3:(0,8)^3 =

=1^6 -(16/10 x 10/8)^3 =1 -2^3 =1- 8 = -7

d)

(0,9)^9 x (1 1/9)^9 -(1,2)^10:(1 1/5)^10 =

=(9/10)^9 x (10/9)^8 -(12/10)^10:(12/10)^10 =

=(9/10 x 10/9)^9 -(12/10 x 10/12)^10 =1 -1 = 0