Răspuns :
(x+1)²=16
x+1=+/-√16
x+1=+/-4
probail prin partea negativa inteklege RADACINA negativa
x+1=-4...x=-5
cealalta este pt x+1=4....x=3
( x + 1 )² = 16
x + 1 = √ 16 =+ / - 4
x + 1 = 4
x = 4 - 1
x = 3
x + 1 = - 4
x = - 4 - 1
x = - 5
Verific:
( 3 + 1 )² = 4² = 16
( - 5 + 1 ) ² = ( - 4 )² = 16