Find all roots of x2+8x+15x^2 + 8x + 15x2+8x+15.
x=−3x = -3x=−3 and x=−5x = -5x=−5
x=3x = 3x=3 and x=5x = 5x=5
x=−1x = -1x=−1 and x=−15x = -15x=−15
x=1x = 1x=1 and x=15x = 15x=15