Question

. Calculaţi: a) 78-(-8+12-22)+5.(-4)"; b) 10-(-2)-2.(16-20–30); c) -15-[2-(-35 - 45) - 403–10'; d) 8:(-5)2 – 20. [16+(-20))+| ; ² ]10​

Answer 1

Explicație pas cu pas:

a)

78-(-8+12-22)+5•(-4)²=

78-(4-22)+5•16=

78-(-18)+80=

78+18+80=176

b)

10•(-2)³-2•(16-20-30)=

10•(-8)-2•(-4-30)=

-80-2•(-34)=

-80+68=-12

c)

-15-[2•(-35-45)-40]-10³=

-15-[2•(-80)-40]-1000=

-15-(-160-40)-1000=

-15-(-200)-1000=

-15+200-1000=

185-1000=-815

d)

8²•(-5)²-20•[16+(-20)]+100=

(-40)²-20•(16-20)+100=

1600-20•(-4)+100=

1600+80+100=

1680+100=1780

Reține:

+ • + = +

- • - = +

- • + = -

sper că te-am ajutat

Answer 2

a.76-(-8+12-22)+5•(-4)^2= 176

b.10•(-2)^3-2•(16-20-30)= -12

c.-15-[2•(35-45)-40]-10^3- 955

d.8^2•(-5)^2-20•[16+(-20)]+100=1780