Question

x plus 1 totul la a doua este egal cu 16! cat da?

Answer 1

(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

Answer 2

( 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