Question

x^2-2x-15 less than or equal to 0

Answer 1

\[x^2-5x+3x-15 \le 0\]\[x(x-5)-3(x-5) \le 0\]

Answer 2

(x-5)(x-3) le 0

Answer 3

\[x ^{2}-2x-15=(x-5)(x+3)\le0\]

Answer 4

Only when the graphs falls in this interval:
\[-3\le x \le 5\]