Dau 40 puncte + coroana!!!
Va rog sa-mi spuneti cum se rezolva exercitiile de la 1 pana la 8.

1.) (2^3)^8:2^21-4:4=2^24:2^17:4=2^7:4=128:4=32

2.) D10={1,2,5,10}

1+2+5+10=18

3.)........................

4.) 2x-3=47

x=?

2x-3=47 l:2

x-1.5=23.5

x=23,5+1.5

x=25

5.)BOC:2=70°:2=>AOB=35°

6.)ACB=UNGHI ALUNGIT

7.)LA EXERCITIUL ACESTA VOI TRIMITE O POZA

8.)

(2 2/5-1 2/5-1/6):[0,2(3) •10/7+1/2]²=

=(12/5-7/5-1/6):(7/30 •10/7+1/2)²=

=(1-1/6):(1/3+1/2)²=

=5/6:(5/6)²=6/5

1)= 2²⁴÷2²¹−1=

= 2³−1= 8−1= 7

2)= D₁₀= 1,2,5,10

Suma divizori = 1+2+5+10= 18

3)=

Nu înțeleg

4)= 2x= 47+3=50

X= 50:2= 25

5)= 70:2= 35⁰

6)= ACB este unghi obtuz

7)

8)= (1−1/6)÷(23-2)/90 ×10/7+1/2)²=

= 5/6÷( 21/90 × 10/7+1/2)²=

= 5/6÷( 7/30 × 10/7 +1/2)²=

= 5/6 ÷ ( 1/3 × 1/1 + 1/2)²=

= 5/6 ÷( 1/3+1/2)²=

= 5/6÷( 2/6+3/6)²=

=5/6÷(5/6)²=

5/6÷ 25/36=

5/6 ×36/25=

1× 6/5= 6/5