Question

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TRY THESE
Locate ✓5 and -✓5 on number line. ​

Answer 1

Answer:

(AC)^2=(AB)^2+(BC)^2

=(2)^2+(1)^2

=4+1

=5

And

AC2=AB2+AC2

=-2*2+√1

=-4+√1

=-√5