Question

Zad 7 str 22

a) (-45)³ • (1/15)³+25²:(-5)²

b) (1/42)³ :(-1/21)³-100³• (-1/10)³

c) (1,2)³ :12³-(0,6)⁵• (-5/3)⁵

d) (-4/3)²¹ • (0,75)²¹ -(0,5)⁰: 2⁰

Proszę o pomoć ;)); ***

Answer 1

a) (-45)³ • (1/15)³+25²:(-5)²= (-45 *1/15)³ +(25:5)²=(-3)³ + 5²= -27 +25=-2

b) (1/42)³ :(-1/21)³-100³• (-1/10)³=[1/42 *(-21)]³-[100 * (-1/10)]³=(-½)³-(-10)³=(-⅛)-(-1000)=(-⅛)+1000= 999 ⅞

c) (1,2)³ :12³-(0,6)⁵• (-5/3)⁵=(1,2:12)³-[⅗*(-5/3)⁵=0,1³ - (-1)⁵=0,001 +1 =1,001

d) (-4/3)²¹ • (0,75)²¹ -(0,5)⁰: 2⁰=(-4/3*3/4)²¹- 1= (-1)²-1=1-1=0