Question

2.Calculati:
a)(5^3-5^2-5):5-5^0
b)(1^0+2^1-2^0)*(0^2+1^2+2^2)
c)(2+3*5)^2
d)3*(5-2^2)^2
e)6^2*8^2:2^6
f)(8+97*3)^0
g)3*(5-2^2)^2
h)3^2*(3*5^2-2^3*3^2-3)
I)(13^2-23*3)^4
m)[2*(3*5-2^3)^2-2*7^2]:5

2.Care dintre urmatoarele numere sunt patrate perfecte: a)25, b)100, c)169, d)200, e)1000, f)40, g)144, h)56, I)900, j)128, k)256.

Answer 1

Răspuns:

ex 1

a) raspunsul este 0

b)raspunsul este 12

c)rasp.=34

d)rasp.=6

e)rasp.=16

f)rasp=0

g)rasp.=6

h)rasp=6462

l)rasp =  -80

m)rasp = 1.6

Explicație pas cu pas:

Answer 2

Răspuns:

1)

a) (5^3-5^2-5)÷5-5^0

(125-25-5)÷5-1

(120-5)÷5-1

115÷5-1

23-1=22

b) (1^0+2^1-2^0)×(0^2+1^2+2^2)

(1+2-1)×(0+1+4)

2×5=10

e)6^2×8^2÷2^6

36×64÷64

2,304÷64

36