Question

Решите уравнение:1) x²-6.25=0. 2) 3.24-x²=0. 3) 2y²-2.42=0

Answer 1

1) $x^{2} =6.25;x=2.5; x=-2.5$
2)$x^{2} =3.24; x=1.8; x=-1.8$
3)$2 y^{2} =2.42; y^{2} =1.21; y=1.1; y= -1.1$

Answer 2

1) x^2 - 6.25 = 0  ;    x^2 = 6.25    ;  x = Sqrt(6.25)   ;  x = 2.5
2) 3.24 - x^2 = 0  ;    x^2 = 3.24    ; x = Sqrtt(3.24)   ;  x = 1.8
3) 2y^2 - 2.42 = 0 ;  2y^2 = 2.42   ; y^2 = 1.21    ;  y = Sqrt(1.2)  ; 
     y = Sqrt(1.21)  ;  y = 1.1