Question

factorise x^2- 4x- 5​

Answer 1

hello mate!!!

Solution:

x^2-4x-5=0

now,

x^2-5x+1x-5

x(x-5)+1(x-5)

(x-5)(x+1)

hope this helps!!✌❤☺

Answer 2

x+1=0

x= -1

p(x)=x^2-4x-5

p(-1)=(-1)^2-4(-1)-5

= 1+4-5

=5-5

= 0