Решите уравнение: a) x₂+64 б) x₂-144=0 в) x₂+25=0 г) x₂-5=0 д) (x-1)₂=9 е) (x+5)₂=0

А)  x^2 + 64 = 0 
x^2 = - 64
нет реш

б) x^2 = 144
x₁ = - 12
x₂ = 12;

в) x^2 + 25 = 0 
x^2 = - 25
нет реш

г) x^2 - 5  = 0
x^2 = 5 
x₁ = - √5;
x₂ = √5

д) (x - 1)^2 = 9 
(x - 1 - 3)(x - 1 +3) = 0
(x - 4)(x + 2) = 0 
x = 4;
x = - 2;

е) (x + 5)^2 = 0 
x + 5 = 0 ;
x = - 5 

X^2 + 64 = 0
x^2 = - 64 - корней нет

x^2 - 144 = 0
x^2 = 144
x1 = 12
x2 = - 12

x^2 + 25 = 0
x^2 = - 25 - корней нет

x^2 - 5 = 0
x^2 = 5
x1 = √5
x2 = - √5

(x - 1)^2 = 9
x^2 - 2x + 1 - 9 = 0
x^2 - 2x - 8 = 0
D = 4 + 32 = 36 = 6^2
x1 = ( 2 + 6) / 2 = 4
x2 = ( 2 - 6) / 2 = - 2

(x+ 5)(x+ 5) = 0
x + 5 = 0
x = - 5