(x-9) (x+4)
Step-by-step explanation:
x^2 – 5x - 36,
What two numbers multiply to -36 and add to -5
-9 *4 = -36
-9+4 = -5
6 hours 48 min
step-by-step explanation:
68÷5=13.6
13.6×30=408min=6 hours 48 min.
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