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or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

the second option

step-by-step explanation:

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.

(1 km=1000m, 1m=100 cm)