Klasa 2 Gim
Zadanie 4 str 35 Matematyka z +
/ - kreska ułamkowa
x - mnożenie
np ^8 - potęga
Oblicz:
a. 1/2 x [(-1)^8 + (-1)^8] =
b. (-3 1/3)^3 x 0.3^4 - (1/2)^3 x (1 1/3)^2 =
c. (1 1/3)^3 x (-3 3/4)^2 : 3 - (1/3)^2 =
d. (-0.3)^2 : 0.1 - 0.2^3 x (2 1/2)^2 =
e (-0.1)^4 x 20^3 + (1 1/2)^3 : (-0.3)^2 =
Proszę o rozwiązanie...
Dzięki Wielkie :]
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a) 1/2x[(-1)^8+(-1)^8]=1/2x[1+1]=1/2x2=1
b) (-3 1/3)^3x0,3^4-(1/2)^3x(1 1/3)^2=(-10/3)^3x0,0081-0,125x(4/3)^2=-1000/27x0,0081-0,125x16/9=-0,3-2/9=-27/90-20/90=-47/90
c) (1 1/3)^3x(-3 3/4)^2:3-(1/3)^2=(4/3)^3x(-15/4)^2:3-1/9=64/27x225/16:3-1/9=100/3:3-1/9=100/9-1/9=99/9=11
d)(-0,3)^2:0,1-0,2^3x(2 1/2)^2=9/100:0,1-8/1000x(5/2)^2=9/10-8/1000x25/4=9/10-1/20=18/20-1/20=17/20
e)(-0,1)^4x20^3+(1 1/2)^3:(-0,3)^2=1/10000x8000+(3/2)^3:9/100=4/5+27/8:9/100=4/5+75/2=8/10+375/10=383/10=38,3
mam nadzieję że pomogłem :)