Question

if one of the factor of x²x-20 is x+5 then te other​

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

x-4

Step-by-step explanation:

Let (x-a) be the other factor. Now, (x + 5), (x - a) are factors of the quadratic equation x² + x - 20 Thus,

(x+5)(x-a)=x² + x - 20

=> x² - ax + 5x -5a = x² + x - 20

=> x(5-a) - 5a = x - 20

Now, considering the co-efficients of x on the both sides,

5-a=1

=> a=5-1=4

Therefore the other factor is (x-4)