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Galina-37 [17]
3 years ago
8

Can someone help me? It's urgent and thank you!

Mathematics
1 answer:
devlian [24]3 years ago
7 0

Answer:

-4 and 5

Step-by-step explanation:

4*5 = x(x-1) ; cross multiply

20 = x²-x ; distribute multiplication over subtraction

x²-x-20 =0; subtract 20 from both sides

(x+4) (x-5) = 0; factor

x+4 =0 gives x = -4

x-5 =0 gives x = 5

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The answer to your question is: Yes, x - 5  is a factor of the polynomial.

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To answer this question you need  to divide the polynomial by the factor and if there is nothing left, they are factor.

                   

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