Question

factorise
x^_y^+2x+1
​

Answer 1

Answer:

x

2

−y

2

+2x+1

=(x

2

+2x+1)−y

2

using (a+b)

2

=a

2

+2ab+b

2

=(x+1)

2

−y

2

=(x+1+y)(x+1−y) using a

2

−b

2

=(a−b)(a+b)

=(x+y+1)(x−y+1)