1) 10x²+5=0 2) 2x²-8=0 3) 2x²-7x+3=0 4) -x2=7x010=0 5) 18-x²=14 6) (10x-4)(3x+2)=0

Question

1) 10x²+5=0 2) 2x²-8=0 3) 2x²-7x+3=0 4) -x2=7x010=0 5) 18-x²=14 6) (10x-4)(3x+2)=0

Answer 1

1) 10x^2=-5

x^2=-5\10 - не имеет решений, тк x^2

2) 2x^2=8

x^2=4

x=+-2

5)18-x^2=14

-x^2=-4

x^2=+-2

 

Answer 2

 

2) 2x^2-8=0

2x^2=8

x^2=4

x=2  

 

10x²+5=0

10x²=-5

x²= -0.5

 

  

18-x^2=14

x^2=-4

-x=2