Question

Va rog ajutati-ma la ex 4

Answer 1

Ai asa

a)   x^2 : 3^2 =(4^2)^2

x^2: 3^2=16^2

x^2/9=256

x^2=256x9=2304

x= radical din 2304 ==>48

verificam 48x48 :9 =256

256=256 adevarat

b)

441/x =49

441 * 1/x =49

441=49*x

441=49x

x=441/49

x=9