Question

2 ( x + 1 )² + 4 = 10
4x² = 64
x² = -2
3x² + 2 =1²+ (-1)²

Answer 1

^2 la puterea a 2
2(x^2+2x+1)+4=10
2x^2+4x+2+4=10
2x^2+4x+6-10=0
2x^2+4x-4=0
delta= b^2-4ac= 16+32=48
x1= -b+√delta supra 2a= (-4+4√3)/4= 4(-1+√3)/4= -1+√3
x2= -b-√delta supra 2a=(-4-4√3)/4= 4(-1-√3)/4= -1-√3

4x^2=64
x^2=64:4
x^2=16
x=√16
x=4

x= -√2

3x^2+2=1+1
3x^2+2=2
3x^2=0
x^2=0
x=0