isabellaDeOliveira isabellaDeOliveira

06-07-2021
Mathematics

contestada

for the equation (x+3)(x+1)=1 explain why the solutions are not -3 and -1

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surjithayer10otahza surjithayer10otahza

06-07-2021

Answer:

Step-by-step explanation:

(x+3)(x+1)=1

x²+3x+x+3=1

x²+4x+2=0

x²+4x+4=-2+4

(x+2)²=2

x+2=±√2

x=2+√2

and x=2-√2

so x≠-3

and x≠-1

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