Find all roots of the polynomial P(x)=x2−9x+20P(x) = x^2 - 9x + 20P(x)=x2−9x+20.
x=4x = 4x=4 and x=5x = 5x=5
x=2x = 2x=2 and x=10x = 10x=10
x=−4x = -4x=−4 and x=−5x = -5x=−5
x=1x = 1x=1 and x=20x = 20x=20