Question

Vă rog ambele exerciții! ! repedee!! dau coroana ​

Answer 1

4.

a)40

b)154

c)24

5.

a)395

b)247

c)321

Answer 2

Răspuns:

ex4 .

       a) $12^{2}$-$2^{3}$- 13 =144-8-13 =  123

        b)$15^{2}$-19·$3^{2}$=225-19·9= 225-171=  54

        c)$18^{2}$-$5^{2}$·12=324-25·12=324-300=   24

ex5.

        a)$20^{2}$-80:$2^{4}$=400-80:16= 400-5 =   395

        b)$16^{2}$-72:$2^{3}$=256-72:8= 256-9=  247

        c)$18^{2}$-75:$5^{2}$=323-75:25=323-3=  320