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kotegsom
11 days ago
12

Which shows the factored form of x2 – 12x – 45?

Mathematics
2 answers:
AnnZ [9K]11 days ago
6 0
Hello!

(x+a)·(x+b) equals x²+xa+xb+ab which simplifies to x²-12x-45

x² equals x²
xa+xb can be expressed as (a+b)x = -12x thus, (a+b) = -12
ab equals -45

Under what conditions do (a+b) equal -12 and ab equal -45?

+3-15 results in -12 while (+3)(-15) gives -45
-3-15 yields -18 and (-3)(-15) results in +45
+3+15 produces +18 and (+3)(+15) also equal to +45
-3+15 equals +12 and (-3+15) results in -45

Conclusion:

(x+3)(x-15) 



zzz [9K]11 days ago
4 0

Final answer:

Hello everyone!!!

Detailed explanation:

I determined that the factors are (x+3) and (x-15). Wishing you all the best in what you're doing!!

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A ship sails at 15 miles per hour, while it can motor at 5 miles per hour. It sails for 6 hours to its destination but has to mo
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Greetings!

The conclusion is:

The return trip will take 18 hours.

Reasoning:

To determine the duration of the return journey, we must calculate the distance from the destination back to the starting point.

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Have a nice day!

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