Factorise the following equation: x^2-y^2+2x+1
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Answer:
(x+1+y)(x+1-y)
Step-by-step explanation:
x²-y²+2x+1
rearranging
=x²+2x+1-y²
we know that
(a+b)²=a²+2ab+b²
=(x+1)²-y²
using a²-b²=(a+b)(a-b)
=(x+1+y)(x+1-y)
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