Question

rezolvati ecuatiile :

x²=0

x²=-2

x²=16

4x²=64

3x²=108

x²+4=5

3x²+2=1²+(-1)²

x²+1=(√3)²

x²=$\frac{4}{25}$

Answer 1

x^2=0

x=0

x^2=-2

x € R

x^2=16

x=+4

x=-4

x=4

4x^2=64

x^2=16

x=+4

x=-4

x=4

3x^2=108

x^2=36

x=+6

x=-6

x=6

x^2+4=5

x^2=5-4

x^2=+1

x^2=-1

x^2=1

3x^2+2=1^2+(-1)^2

3x^2+2=1+1

3x^2+2=2

3x^2=0

x^2=0

x=0

${x}^{2} + 1 = ( \sqrt{3) ^{2} } \\ {x}^{2} + 1 = 3 \\ {x}^{2} = 3 - 1 \\ {x}^{2} = 2 \\ {x}^{2} = + \sqrt{2} \\ {x}^{2} = - \sqrt{2} \\ {x}^{2} = \sqrt{2}$

x^2=4/25

x=+2/5

x=-2/5

x=2/5