Which of the following represents all solutions of x² - 4x-1=0?

Hello!

Given the quadratic equation in standard form

∙xax2+bx+c=0x;a≠0

We can solve for x using the quadratic formula

∙xx=−b±√b2−4ac2a

x2+4x+1=0 is in standard form

with a=1,b=4 and c=1

⇒x=−4±√16−42=−4±√122

x=−4±2√32=−2±√3←exact values

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answer: apothems is your answer

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