Question

fie x natural rezolvati ecuatiile 3 la puterea 3-x=12,2*(x+4)=36,(3x-5)+3 la puterea 1=4,3 la puterea 3+6(x-2)=69,(1+3 la puterea 2)+(x-2 la puterea 3)=12,

Answer 1

Răspuns

Explicație pas cu pas:

3³ - x = 12

27 - x = 12

x = 27 - 12 ⇒   x = 15

_________________

2 × ( x + 4 ) = 36  l : 2

x + 4 = 18

x = 18 - 4  ⇒  x = 14

_________________

( 3 x - 5 ) + 3¹ = 4

3 x - 5 = 4 - 3

3 x = 1 + 5

3 x = 6  ⇒   x = 6 : 3  ⇒   x = 2

_________________________

3³+ 6 ( x - 2 ) = 69

6 x - 12 = 69 - 3

6 x = 66 + 12

x = 78 : 6  ⇒   x = 13

__________________

( 1 + 3² ) + ( x - 2³ ) = 12

10  + x - 8 = 12

x = 12 - 2

x = 10