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LekaFEV [45]
3 years ago
6

Which of the binomials below is a factor of this trinominal x^2-10x-39

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

C

Step-by-step explanation:

To factorise the quadratic

Consider the factors of the constant term (- 39) which sum to give the coefficient of the x- term (- 10)

The factors are - 13 and + 3, since

- 13 × 3 = - 39 and - 13 + 3 = - 10, hence

x² - 10x - 39 = (x - 13)(x + 3) ← in factored form

x - 13 is a factor → C

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f(x)=x^2-x-1 , average rate of change of f over interval -2 greater than or equal to x less than or equal to 1
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The average rate of change within the function f(x)=x^{2} -x-1is -2.

Given The function f(x)=x^{2} -x-1

We have to search out the typical rate of change of function within the interval (-2,1).Interval is largely a variety between numbers lying on the quantity line which may be a line on which different numbers are plotted.

We know that average rate of change =f(b)-f(a)/(b-a)

we have to first know the values of function at different values of x.

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f(1)=1-1-1

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put within the formula:

A=-1-5/1+2

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Hence average rate of change of the function within the interval (-2,1) is -2.

Learn more about average at brainly.com/question/20118982

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