Question

y=x³-x
y=6x-x²
y=-x+5

Answer 1

1. $y = x {}^{3} - x \\ 0 = x {}^{3} - x \\ x {}^{3} - x = 0 \\ x1 = 0 \: \: \: \: x2 = 1 \: \: \: x3 = - 1$

2. $y = 6x - x { }^{2} \\ 0 = 6x - x {}^{2} \\ 6x - x {}^{2} = 0 \\ x \times (6 - x) = 0 \\ x1 = 0 \: \: \: x2 = 6$

3. $y = - x + 5 \\ 0 = - x + 5 \\ x = 5$