Isolating x question?

Question

say u have -x^2+1=0 so first u do -x^2+1=-1 or

do u divide the negative out or have to root it first same thing for 3x^2+1=0

and -3x+1=0 isolate for x

Answer 1

-x²+1=0

subtract 1 from both sides. You must always perform the same operation on both sides of the equality

-x²+1 -1 = 0 -1

add

-x² = -1

multiply both sides by -1

x² = 1

take square root both sides

x = √1

x = ± 1

3x²+1=0

3x² = -1

x² = -1/3

x = ± √(-1/3)

-3x+1=0

3x = 1

x = 1/3

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