DMarje
20.10.2019 •
Mathematics
How do you factor this? (x-3)(x+1)+(x-3)(x+8)
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Ответ:
(x-3)(x+1+x+8)
(x-3)(2x+9) ← answer
Ответ:
The factors of 60 that add to -23 would be -20 and -3
A negative times a negative results in a positive number. 20 times 3 is 60, but that would result in a positive number when added. So, just make 20 and 3 negative numbers.
Hope I helped!