Question

factorise....x²-x-20​

Answer 1

Answer:

(x - 4)( x + 5)

Step-by-step explanation:

Find 2 numbers knowing sum (1) and product (-20).

To find them, factor pairs of (-20) --> (-2, 10)(-4, 5). This sum is 1 = b.

Then, these 2 numbers are: -4 and 5.

y = (x - 4)(x + 5)

Answer 2

Answer:

x+4 and x-5

Step-by-step explanation:

by doing this is answer