Factorise each by first completing the square.
a) x^2 - x - 1
b) x^2 - 3x - 3
c) x^2 + x - 5
d) x^2 + 3x - 1
e) x^2 + 5x + 2
f) x^2 + 5x - 2
g) x^2 - 7x - 1
h) x^2 - 9x + 13
i) x^2 - x - 3

yes

step-by-step explanation:

yes

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: