Question

cine mă ajuta cu ecuațiile astea?va rog frumos.îmi trebuiesc urgent

Answer 1

1) [√(x+3)]²=2²
x+3=4
x=4-3
x=1

2) [√(x-5)]²=1²
x-5=1
x=1+5
x=6

3) [√(2x+1)]²=3²
2x+1=9
2x=9-1
2x=8
x=8/2
x=4

4) [√(2x-1)]²=3²
2x-1=9
2x=9+1
2x=10
x=10/2
x=5

5) [√(x²+x)]²=x²
x²+x=x²
x²-x²+x=0
x=0

6) [√(2x-1)]²=[√(x+2)]²
2x-1=x+2
2x-x=2+1
x=3

7) [√(3x+1)]²=[√(2x+4)]²
3x+1=2x+4
3x-2x=4-1
x=3