Question

Factirise : xsquare-4x-5

Answer 1

x^2-4x-5
=x^2-5x+x+5
=x(x-5)+1(x-5)
=(x+1) (x-5)
x=-1,5


hope it helps you

Answer 2

Heya !!!

Here is Your Answer.

Given :
x² - 4x - 5

We have to find two numbers a and b such that ab = -5 and a+b = -4

By looking at the prime factorisation of 5 (i.e 1×5)

We get a = -5 and b = 1

So,
x² - 4x - 5
= x² - 5x +x - 5
= x(x-5) + 1 (x- 5)
= (x +1)(x-5)

X = -1 and x = 5


Hope It Helps