Question

A) X ori 2 +7= -2


b ) /1- radical 2 / si /1 +radical 2/ = ( media geometrica )

Answer 1

Răspuns:

A) x ori 2=-2-7=-9

x = -9 × 2

x= -18

Answer 2

Răspuns:

Salut

a)x•2+7=-2

2x+7=-2

2x=-2-7

2x=-9

x= -9/2

b) |1-√2|=√2-1 =>√2>1

|1+√2|=1+√2

mg=√(√2-1)(1+√2)= totul sub radical

√2-1= totul sub radical

√1=1.

==evergreen==