Решить уравнения:

1) 3x^2=0

2)(x+1)(x-1)=0

3)4x^2-1=0

4) 3x^2=5x

5) 4x^2-4x+1=0

6) x^2-16x-17=0

7) 0,3x^2+5x=2

Разложить на множители:

1) x^2+x-6

2) 2x^2-x-3

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