4X² - 4 = 0
4 * ( X - 1 )*( X + 1 ) = 0
X - 1 = 0 ==> X = 1
X + 1 = 0 ==> X = - 1
ОТВЕТ 1 ; - 1
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( y + 2 )*( 3y - 9 ) = 0
3 * ( y + 2 ) * ( y - 3 ) = 0
y + 2 = 0 ==> y = - 2
y - 3 = 0 ==> y = 3
ОТВЕТ ( - 2) ; 3
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X² - 8X + 16 = 0
( X - 4 )*( X - 4 ) = 0
X - 4 = 0 ==> X = 4
ОТВЕТ 4
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t⁵ = 9t³
t⁵ - 9t³ = 0
t³ * ( t² - 9 ) = 0
t³ * ( t - 3 )*( t + 3 ) = 0
t³ = 0 ==> t = 0
t - 3 = 0 ==> t = 3
t + 3 = 0 ==> t = - 3
ОТВЕТ 0 ; 3 ; - 3
----------------------
4y - y³ = 0
y * ( 4 - y² ) = 0
y * ( 2 - y ) * ( 2 + y ) = 0
y = 0
2 - y = 0 ==> y = 2
2 + y = 0 ==> y = - 2
ОТВЕТ 0 ; 2 ; - 2