TheBugDa
28.08.2019 •
Mathematics
If (x+5) is a factor of 3x^2+14x+k, what is the value of k?
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Ответ:
3(-5^2)+14(-5)+k=0
75-70+k=0
5+k=0
k=-5
Ответ:
I use this trick: When tryig to find repeating numbers divide by 11 or 9
When dividing by 9 the numerator will be the first number in the decimal
When dividing by 11 the numerator will be one more than the first number in the decimal