Решить уравнение:
а) (x – 2)(x + 2) = 0;
б) x2 – 16 = 0;
в) x2 + 10x + 25=0.
1) ( x - 2)(x + 2) = 0
x - 2 = 0
x = 2
x + 2 = 0
x = - 2
2) x^2 - 16 = 0
x^2 = 16
x = 4
x = - 4
3) x^2 + 10x+ 25 =0
( x + 5)^2 = 0
x+ 5 = 0
x = - 5
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