Question

Determinati x € R astfel incat 34+15(x+3) la a doua =(-13) la a doua

Answer 1

34+15(x+3)²=(-13)²

34+15(x+3)²=13²=169

15(x+3)²=169-34=135

(x+3)²=$\frac{135}{5} = 9$

x+3=±$\sqrt{9}$

x+3=±3

x+3=3=>x=0

x+3=-3=>x=-3-3=-6

Answer 2

Aici ai rezolvarea :)
Sper ca te-am putut ajuta :)