Year 12s: what will be the first way you research your future options? >>

Find the real roots of an equation

I managed to get y = -6 and 1 but don't know how to get x :/

Normally you just square root/square with these types of questions so I'm not use to this one.

http://imgur.com/OenWCeo

Reply 1

Kvothe the Arcane

Original post by PeaceTreaty

I managed to get y = -6 and 1 but don't know how to get x :/

Normally you just square root/square with these types of questions so I'm not use to this one.

http://imgur.com/OenWCeo

Looks like there's be 4 values for x (unless I'm mistaken). I'm not surprised as it is a quartic.

y=(x+2)^2

-6=(x+2)^2

and

1=(x+2)^2

. Actually, just 2 real roots looking at that. Although you'll also have 2 complex ones.

Reply 2

Slowbro93

Original post by PeaceTreaty

I managed to get y = -6 and 1 but don't know how to get x :/

Normally you just square root/square with these types of questions so I'm not use to this one.

http://imgur.com/OenWCeo

You know that