Question

Va rog anunțați-mă!

Answer 1

a) x²:81 = 4

x² = 4*81

x² = 324

x = √324

x = 18

=> a -> 3

b) 196:x² = 7²

196:x² = 49 | * x²

196 = 49x²

49x² = 196

x² = 196:49

x = √4

x = 2

=> b -> 4

c) x² = 100-36

x² = 64

x = √64

x = 8

=> c -> 1

d) 324:5^x = (2*9)²

324:5^x = 324 | *5^x

324*5^x = 324

5^x = 324/324

5^x = 1

5^x = 5^0

x = 0

=> d -> 2

Answer 2

a)18; b)2; c)8; d)0;.............................