1) x^2 - x = 0x(x - 1) = 0x = 0 или x = 1
2) p^2 + 15p = 0p(p + 15) = 0p = 0 или p = -15
3) 5x^2 - 30x = 05x(x - 6) = 0x = 0 или x = 6
4) 14x^2 + 18x = 02x(7x + 9) = 0x = 0 или x = -9/7
1) x^2 - x = 0
x(x - 1) = 0
x = 0 или x = 1
2) p^2 + 15p = 0
p(p + 15) = 0
p = 0 или p = -15
3) 5x^2 - 30x = 0
5x(x - 6) = 0
x = 0 или x = 6
4) 14x^2 + 18x = 0
2x(7x + 9) = 0
x = 0 или x = -9/7