17. Factorize the following
a? – x2 – 2x - 1
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Step-by-step explanation:
x^2+2x-1
=x^2+2x+(2/2)^2-(2/2)^2–1
=[x^2+2x+1]-1–1
=(x+1)^2–2
=(x+1+sqrt(2))(x+1-sqrt(2))
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