Question

(7-v3)^2=
A) 4
B) 46
C) 52-14v3
D) 52-2v3

P.s:
V = radial
^ = la puterea...

Vreau raspunsuri complete.

Answer 1

   
[tex]\text{Folosim formula: } ~~(a-b)^2 = a^2 -2ab + b^2 \\\\ (7 - \sqrt{3})^2 = 7^2 -2\times 7\times \sqrt{3} + (\sqrt{3})^2 = 49-14 \sqrt{3} + 3 = \boxed{\bf52 -14 \sqrt{3} }\\\\ \text{Raspuns corect: } ~\boxed{\bf C)}[/tex]

Answer 2

(7-v3)²=                                   (7-v3) (7-v3) =

A) 4;                                        49- 7√3- 7√3+ 3=

B) 46;                                      52 - 14√3

C) 52-14v3;

D) 52-2v3.