Question

срочно нужна помощь

Answer 1

б) (x+3)(x -4) = -12
x² -4x +3x -12 +12 =0
x² -x =0
x(x -1) =0
x =0,
x -1 =0
x =1
ответ: x =0, x =1

a) 1/27*x² =x²/27

x²/27 -1/3 =0

1/3(x²/9 -1) =0

x²/9 -1 =0

(x² -9)/9 =0

x² -9 =0

(x -3)(x+3) =0

x -3 =0, x =3
x+3 =0, x= -3

ответ: x= -3, x =3