Question

If one of the factor of x^2 + x -20 is (x + 5). Find the other
(a) r-4
(b) x + 2
(c) x + 4
(d) X-5​

Answer 1

Answer:

x-4

Step-by-step explanation:

x^2+x-20=0

x+5 is a factor

hence, x=-5

x-4=0

x=4

x^2+x-20

4^2+4-20

16+4-20

20-20

0

hence, x+4is the other factor